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 A227024 #6 Jul 23 2025 05:32:22 %S A227024 25,368,4948,65317,786154,8379285,79224749,668706345,5081503151, %T A227024 35102679286,222533536879,1305789511714,7145426639248,36700964912428, %U A227024 177929765359899,818153315837912,3583007628524884,14999102522624015 %N A227024 Number of nX5 (0,1,2) arrays of permanents of 2X2 subblocks of some (n+1)X6 binary array with rows and columns of the latter in lexicographically nondecreasing order. %C A227024 Column 5 of A227025 %H A227024 R. H. Hardin, <a href="/A227024/b227024.txt">Table of n, a(n) for n = 1..29</a> %e A227024 Some solutions for n=4 %e A227024 ..0..0..0..1..0....0..0..0..0..0....0..1..0..0..1....0..0..0..0..1 %e A227024 ..0..0..1..0..0....0..0..0..1..1....0..0..0..0..1....0..0..0..1..2 %e A227024 ..0..2..0..0..1....0..1..2..1..1....0..1..1..2..1....0..1..2..2..1 %e A227024 ..1..1..0..0..0....1..0..1..2..2....1..0..1..2..2....2..2..2..2..1 %K A227024 nonn %O A227024 1,1 %A A227024 _R. H. Hardin_ Jun 27 2013