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 A259425 #6 Jun 02 2025 11:51:26 %S A259425 5116,244228,11155819,516880938,23840819225,1101527291223, %T A259425 50866278137234,2349427850331898,108508759637883502, %U A259425 5011650686139055977,231469252522568886300,10690739165994474824625,493766694363268100694125 %N A259425 Number of (n+1)X(6+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0011 or 0111. %C A259425 Column 6 of A259427 %H A259425 R. H. Hardin, <a href="/A259425/b259425.txt">Table of n, a(n) for n = 1..210</a> %H A259425 R. H. Hardin, <a href="/A259425/a259425.txt">Empirical recurrence of order 62</a> %F A259425 Empirical recurrence of order 62 (see link above) %e A259425 Some solutions for n=1 %e A259425 ..1..0..0..0..1..1..1....1..0..0..1..1..1..0....0..1..0..1..0..1..1 %e A259425 ..1..1..1..0..0..1..0....1..0..0..1..0..0..0....0..0..0..1..0..1..0 %Y A259425 Cf. A259427 %K A259425 nonn %O A259425 1,1 %A A259425 _R. H. Hardin_, Jun 26 2015