This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A031036 #14 Nov 14 2024 08:24:07 %S A031036 9,25,41,57,73,89,105,121,122,124,127,130,133,136,139,142,146,170,194, %T A031036 218,242,266,290,313,314,316,319,322,325,328,331,334,338,362,386,410, %U A031036 434,458,482,505,506,508,511,514,517,520,523,526,530,554,578,602,626,650 %N A031036 Position of n-th 0 in A031035. %H A031036 Robert Israel, <a href="/A031036/b031036.txt">Table of n, a(n) for n = 1..10000</a> %p A031036 A:= [seq](op(ListTools:-Reverse(convert(n,base,8))),n=1..400): %p A031036 select(t -> A[t]=0, [$1..nops(A)]); # _Robert Israel_, Nov 12 2024 %t A031036 PositionIndex[Flatten[IntegerDigits[Range[500], 8]]][0] (* _Paolo Xausa_, Nov 14 2024 *) %K A031036 nonn %O A031036 1,1 %A A031036 _Clark Kimberling_