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 A080316 #8 Jan 11 2024 09:40:18 %S A080316 0,12,204,240,3276,3312,4032,3852,3888,52428,52464,53184,53004,53040, %T A080316 64524,64560,64704,61644,61680,65280,62400,62220,62256,838860,838896, %U A080316 839616,839436,839472,850956,850992,851136,848076,848112,851712,848832 %N A080316 a(n) = A080315(n) - 2^A000523(A080315(n)), i.e., the terms of A080315 without their most significant bit. %Y A080316 Same sequence in binary: A080317. %K A080316 nonn %O A080316 0,2 %A A080316 _Antti Karttunen_, Mar 02 2003