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 A224047 #8 Jul 23 2025 04:57:10 %S A224047 296,17723,376734,4646480,41991129,310514900,1999959111,11666303576, %T A224047 63064614327,319676018383,1527645330800,6898951459856,29492315195008, %U A224047 119554362889697,460533210896643,1689732709960111,5919921112242653 %N A224047 Number of nX5 0..3 arrays with rows and columns unimodal and antidiagonals nondecreasing. %C A224047 Column 5 of A224050 %H A224047 R. H. Hardin, <a href="/A224047/b224047.txt">Table of n, a(n) for n = 1..163</a> %H A224047 R. H. Hardin, <a href="/A224047/a224047.txt">Empirical polynomial of degree 30</a> %F A224047 Empirical polynomial of degree 30 (see link above) %e A224047 Some solutions for n=3 %e A224047 ..0..0..0..0..2....0..0..1..2..2....1..2..2..2..0....0..0..1..1..0 %e A224047 ..0..0..1..2..2....2..2..2..2..2....3..2..2..2..0....0..1..2..1..0 %e A224047 ..0..3..2..2..0....2..2..2..2..1....2..2..2..2..3....2..3..3..2..1 %K A224047 nonn %O A224047 1,1 %A A224047 _R. H. Hardin_ Apr 01 2013