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 A175917 #14 Dec 30 2017 11:46:19 %S A175917 0,0,0,0,2,2,0,0,6,6,0,0,0,0,0,0,14,14,4,4,10,10,0,0,4,4,4,4,0,0,0,0, %T A175917 30,30,12,12,18,18,0,0,18,18,0,0,18,18,0,0,12,12,12,12,0,0,0,0,0,0,0, %U A175917 0,0,0,0,0,62,62,28,28,42,42,8,8,54,54,20,20,34,34,0,0,42,42,8,8,42,42,8,8,34 %N A175917 Convert n to binary. NOR each respective digit of binary n and binary A030101(n), where A030101(n) is the reversal of the order of the digits in the binary representation of n (given in decimal). a(n) is the decimal value of the result. %C A175917 Description format taken from _Leroy Quet_'s OR and AND gate sequences for consistency. %H A175917 Alois P. Heinz, <a href="/A175917/b175917.txt">Table of n, a(n) for n = 0..16383</a> %t A175917 Table[f = IntegerDigits[x, 2]; f = f + Reverse[f]; FromDigits[ Table[If[Positive[f[[r]]], 0, 1], {r, 1, Length[f]}], 2], {x, STARTPOINT,ENDPOINT}] %Y A175917 Or A175298 and And A175297 gate sequences. The rest of the equivalent sequences for other gates are adjacent. %K A175917 base,nonn %O A175917 0,5 %A A175917 _Dylan Hamilton_, Oct 15 2010