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 A137776 #12 Sep 09 2024 05:33:21
%S A137776 0,0,1,1,2,2,3,4,4,8,6,16,12,32,28,64,64,128,136,256,272,512,528,1024,
%T A137776 1024,2048,2016,4096,4032,8192,8128,16384,16384,32768,32896,65536,
%U A137776 65792,131072,131328,262144,262144,524288,523776,1048576,1047552,2097152,2096128
%N A137776 Interleave A038504 with A131577.
%H A137776 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (0,4,0,-6,0,4).
%t A137776 LinearRecurrence[{0, 4, 0, -6, 0, 4}, {0, 0, 1, 1, 2, 2, 3, 4}, 45] (* _Amiram Eldar_, Sep 09 2024 *)
%Y A137776 Cf. A038504, A131577.
%K A137776 nonn,easy
%O A137776 0,5
%A A137776 _Paul Curtz_, Apr 28 2008