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 A225979 #7 Jul 23 2025 05:25:56 %S A225979 26,350,4722,61808,737893,7718077,69784592,546720823,3748375290, %T A225979 22776885553,124247348589,615678539423,2800456394451,11798875157732, %U A225979 46405595059222,171524109659874,599254527583339,1988834906193438 %N A225979 Number of nX5 binary arrays whose sum with another nX5 binary array containing no more than two 1s has rows and columns in lexicographically nondecreasing order. %C A225979 Column 5 of A225982 %H A225979 R. H. Hardin, <a href="/A225979/b225979.txt">Table of n, a(n) for n = 1..58</a> %H A225979 R. H. Hardin, <a href="/A225979/a225979.txt">Empirical polynomial of degree 33</a> %F A225979 Empirical polynomial of degree 33 (see link above) %e A225979 Some solutions for n=3 %e A225979 ..0..0..1..1..1....0..0..0..1..0....0..0..1..1..1....1..1..1..1..0 %e A225979 ..0..0..0..0..0....1..1..1..1..1....0..0..0..1..1....0..1..1..1..1 %e A225979 ..1..0..0..0..0....1..1..0..1..1....1..0..1..1..1....1..1..1..1..1 %K A225979 nonn %O A225979 1,1 %A A225979 _R. H. Hardin_ May 22 2013