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 A323974 #5 Feb 09 2019 19:58:08
%S A323974 1,36,606,7900,74451,550334,3367166,17671203,81594028,337852708,
%T A323974 1273299491,4420104505,14270730472,43197868106,123427206990,
%U A323974 334794579989,866353054559,2147831688926,5120298814434,11775576176684,26199681956039,56536753038926,118593356222690
%N A323974 Number of 10 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{10,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.
%H A323974 Alois P. Heinz, <a href="/A323974/b323974.txt">Table of n, a(n) for n = 0..10000</a>
%Y A323974 Row (or column) 10 of array in A323846.
%K A323974 nonn,easy
%O A323974 0,2
%A A323974 _Alois P. Heinz_, Feb 09 2019