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 A223788 #6 Jul 23 2025 04:30:54 %S A223788 239,57121,5425943,288823579,11992802966,478507693443,20229461153969, %T A223788 915762458891757,43206434381517063,2069374312587593444, %U A223788 99272303599050335774,4753191310090939188404,227274223415204231413155 %N A223788 Number of nX7 0..2 arrays with rows, diagonals and antidiagonals unimodal. %C A223788 Column 7 of A223789 %H A223788 R. H. Hardin, <a href="/A223788/b223788.txt">Table of n, a(n) for n = 1..75</a> %e A223788 Some solutions for n=3 %e A223788 ..0..0..0..0..0..2..0....0..0..0..1..1..2..1....0..0..0..0..2..1..1 %e A223788 ..0..0..0..2..0..0..0....0..0..0..1..2..2..2....0..0..0..1..1..1..0 %e A223788 ..0..0..0..0..2..2..1....0..0..0..0..0..2..0....0..0..1..1..2..2..0 %K A223788 nonn %O A223788 1,1 %A A223788 _R. H. Hardin_ Mar 27 2013