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A031491 Numbers whose base-8 representation has 2 fewer 0's than 7's. 0
63, 127, 191, 255, 319, 383, 447, 463, 471, 479, 487, 495, 503, 505, 506, 507, 508, 509, 510, 639, 703, 767, 831, 895, 959, 975, 983, 991, 999, 1007, 1015, 1017, 1018, 1019, 1020, 1021, 1022 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..37.

MATHEMATICA

Select[Range[1100], DigitCount[#, 8, 7]==DigitCount[#, 8, 0]+2&] (* Harvey P. Dale, Mar 31 2018 *)

CROSSREFS

Cf. A007094.

Sequence in context: A031468 A045064 A043450 * A044250 A044631 A045136

Adjacent sequences:  A031488 A031489 A031490 * A031492 A031493 A031494

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 24 14:36 EDT 2022. Contains 354037 sequences. (Running on oeis4.)