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 A366257 #6 Oct 05 2023 18:17:01 %S A366257 0,3,4,5,9,12,13,14,17,20,21,22,26,29,30,31,32,33,36,37,38,42,45,46, %T A366257 47,50,53,54,55,59,62,63,64,65,68,69,70,74,77,78,79,82,85,86,87,91,94, %U A366257 95,96,97,98,101,102,103,107,110,111,112,115,118,119,120,124,127,128,129,132,133,134,138,141,142,143,146,149 %N A366257 Positions of even numbers in May code (A303767). %o A366257 (PARI) isA366257(n) = !(A303767(n)%2); \\ Uses also the program given in A303767. %Y A366257 Cf. A303767, A366256 (complement). %Y A366257 Positions of 0's in A366255. Positions of odd terms in A303760. %K A366257 nonn %O A366257 1,2 %A A366257 _Antti Karttunen_, Oct 05 2023