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 A223973 #8 Jul 23 2025 04:43:54 %S A223973 148,21904,2026448,153196498,10676374380,715985189481,47087051658638, %T A223973 3065213211139220,198505156112480574,12821707501426587223, %U A223973 827061911875686602143,53312878153050071853965,3435377864410521923551264 %N A223973 Number of nX6 0..2 arrays with rows and antidiagonals unimodal. %C A223973 Column 6 of A223975 %H A223973 R. H. Hardin, <a href="/A223973/b223973.txt">Table of n, a(n) for n = 1..210</a> %H A223973 R. H. Hardin, <a href="/A223973/a223973.txt">Empirical recurrence of order 91</a> %F A223973 Empirical recurrence of order 91 (see link above) %e A223973 Some solutions for n=3 %e A223973 ..0..0..2..0..0..0....0..0..2..2..0..0....0..0..2..2..2..0....0..0..1..2..2..0 %e A223973 ..0..0..1..2..2..0....0..0..0..0..0..0....0..0..1..0..0..0....0..0..0..0..2..2 %e A223973 ..0..0..2..1..1..1....0..0..1..1..1..0....0..0..0..0..0..0....0..0..0..0..1..0 %K A223973 nonn %O A223973 1,1 %A A223973 _R. H. Hardin_ Mar 30 2013