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 A224308 #7 Jul 23 2025 05:05:29 %S A224308 148,4690,61953,562760,4420701,33934344,268379906,2215451575, %T A224308 19023816444,168305254414,1519045558334,13877824165049, %U A224308 127654546150864,1178500994429585,10900361047173008,100920807678845030 %N A224308 Number of nX6 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing. %C A224308 Column 6 of A224310 %H A224308 R. H. Hardin, <a href="/A224308/b224308.txt">Table of n, a(n) for n = 1..210</a> %H A224308 R. H. Hardin, <a href="/A224308/a224308.txt">Empirical recurrence of order 88</a> %F A224308 Empirical recurrence of order 88 (see link above) %e A224308 Some solutions for n=3 %e A224308 ..0..2..1..1..0..0....0..0..0..2..0..0....0..1..1..0..0..0....1..1..1..0..0..0 %e A224308 ..2..2..1..0..0..0....0..2..2..0..0..0....1..1..1..2..1..1....2..2..2..2..1..0 %e A224308 ..2..2..1..1..0..0....2..2..1..1..0..0....2..2..2..2..2..2....2..2..2..2..1..0 %K A224308 nonn %O A224308 1,1 %A A224308 _R. H. Hardin_ Apr 03 2013