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 A213965 #6 Mar 25 2023 22:22:50 %S A213965 575122,2860343784,1494988224948,214090209950060,13186531254708756, %T A213965 447939229940051654,9770128253650761936,151215265523724909552, %U A213965 1780021685666973242600,16755629964660417264599,130936901790313197125592 %N A213965 Number of 5 X 5 0..n matrices with row and column 1..5 having sum <= i*n. %C A213965 Row 5 of A213962. %H A213965 R. H. Hardin, <a href="/A213965/b213965.txt">Table of n, a(n) for n = 1..15</a> %e A213965 Some solutions for n=4 %e A213965 ..2..0..1..0..0....3..0..0..0..0....4..0..0..0..0....0..4..0..0..0 %e A213965 ..0..3..1..0..3....0..2..1..4..1....0..4..4..0..0....2..0..1..4..0 %e A213965 ..0..3..4..0..3....0..3..0..0..1....0..4..3..0..0....0..1..2..0..0 %e A213965 ..2..2..1..2..2....0..2..3..2..3....0..0..3..3..4....0..2..1..3..4 %e A213965 ..0..0..4..4..4....0..0..0..2..0....0..0..0..1..4....0..0..4..2..1 %Y A213965 Cf. A213962. %K A213965 nonn %O A213965 1,1 %A A213965 _R. H. Hardin_, Jun 28 2012