The Most Forgotten Natural Number Under 1000

Updating the list and adding 103 & 552:

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Spoiler(000) 0 1 2 3 4 5 6 7 # #
(010) # # # 13 # # # 17 18 #
(020) # 21 # # 24 # # # # #
(030) # # # # # # # # # #
(040) # # 42 # # # # # # #
(050) # # 52 # # # # # # #
(060) # # # # # # # # # 69
(070) # # # # # # # # # #
(080) # # # # # # # # # #
(090) # # # # # # # # # 99

(100) # 101 # 103 # # # # # #
(110) # 111 # # # # # # # #
(120) # # # # # # # # # #
(130) # # # # # # # # # #
(140) # # # # # # # # # #
(150) # # # # # # # # # #
(160) # 161 # 163 # # 166 # # #
(170) # # # 173 # # # # # #
(180) # # # # # # # # # #
(190) # # # # # # # # # #

(200) # # # # # # # # # #
(210) # # # # # # 216 # # #
(220) # # 222 # # # # # # #
(230) # # # # # # # # # #
(240) # # # # # # # # # #
(250) # # # # # # # 257 # #
(260) # # # # # # # # # #
(270) # 271 # # # # # # # #
(280) # # # # # # # # # #
(290) # 291 # # # # # # # #

(300) # # # # 304 # # # # #
(310) # # # # 314 # # # # #
(320) # 321 # # # 325 # # # #
(330) # # # 333 # # # # # #
(340) # # # # # 345 # # # #
(350) # # # # # 355 # # # #
(360) # # # # # # # # # #
(370) # # # # # # # # # #
(380) # # # # # # # # # #
(390) # # # # # # # # # #

(400) # # # # # # # # # #
(410) # # # 413 # # # # # #
(420) 420 # # # # # # # # #
(430) # # # # # # # # # #
(440) # # # # # # # # # #
(450) # # # # # # # # # #
(460) # # # # # # # # # #
(470) # # # # 474 # 476 # # #
(480) # # # # # # # # # #
(490) # # # # # # # # # #

(500) # # # # # # # # # #
(510) # # # # # # # # # #
(520) # # # # # # # # # #
(530) # # # # # # # # # #
(540) # # # # # # # # # #
(550) # # 552 # # # # # # #
(560) # # # # # # # # # #
(570) # # # # # # # # # #
(580) # 581 # # # # # # # #
(590) # 591 # # # # # # # #

(600) # # # # # # # # # #
(610) # # # # # # # # # #
(620) # # # # # # 626 # # #
(630) # # # # # # # # # #
(640) # 641 # # # # # # # #
(650) # # # # # # # # # #
(660) # # # # # # 666 # # #
(670) # # # # 674 # # # # #
(680) # # 682 # # # # # # #
(690) # # # # # # # # # #

(700) # # # # # # # # # #
(710) # # # # # # # # # #
(720) # # # # # # # # # #
(730) # # # # # # 736 737 # #
(740) # # # # # # # 747 # #
(750) # # # # # # # # # #
(760) # # # # # # # # # #
(770) # # # # # # # 777 # #
(780) # # # # # # # # # #
(790) # # # # # # # # # #

(800) # # # # # # 806 # # #
(810) # # # # # # # # # #
(820) # # # # # # # # # #
(830) # # # # 834 # # # # #
(840) # # # # # # # # # #
(850) # # # # # # # # # #
(860) # # # # # # # # # #
(870) # # # # # # # # # #
(880) # # # # # # # # # #
(890) # # # # # # # # # #

(900) # # # # # # # # # #
(910) # # # # # # # # # #
(920) # # # 923 # # # # # #
(930) # # # # # # # # # #
(940) # # # # # # # # # #
(950) # # # # # # # # # #
(960) # # # # # # # # # #
(970) # # # # # # # # # #
(980) # # # # # # # # # #
(990) # # # # # # # # # 999

(we also somehow managed to go all this time without adding the second number posted in this thread, 591, to the list, so I've just done that now)