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 A364042 #11 Jul 03 2023 18:20:33 %S A364042 0,0,0,0,0,0,1,0,2,0,1,0,1,1,0,0,0,2,5,0,5,1,4,0,1,1,4,1,4,0,3,0,6,0, %T A364042 5,2,5,5,4,0,1,5,12,1,4,4,11,0,13,1,0,1,4,4,3,1,12,4,11,0,3,3,10,0,6, %U A364042 6,13,0,13,5,12,2,5,5,4,5,12,4,11,0,13,1,4,5,0,12,11,1,4,4,11,4,11,11,10,0,1 %N A364042 a(n) = 2^A329697(n) - A000120(n). %H A364042 Antti Karttunen, <a href="/A364042/b364042.txt">Table of n, a(n) for n = 1..65537</a> %o A364042 (PARI) A364042(n) = ((2^A329697(n))-hammingweight(n)); %Y A364042 Cf. A000120, A003401 (positions of 0's), A329697, A334100, A336477. %K A364042 nonn %O A364042 1,9 %A A364042 _Antti Karttunen_, Jul 03 2023