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 A219470 #5 Jul 23 2025 00:30:02 %S A219470 84,2663,674954,157191488,29873644925,4758315482104,664221777830589, %T A219470 85045859176792827 %N A219470 Number of nX7 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX7 array. %C A219470 Column 7 of A219471 %e A219470 Some solutions for n=3 %e A219470 ..0..0..0..0..1..2..2....0..0..0..1..1..0..2....0..0..0..0..0..1..3 %e A219470 ..0..0..1..0..2..1..2....0..0..0..0..0..0..0....0..0..0..0..0..2..0 %e A219470 ..0..0..0..0..1..0..0....0..1..3..0..3..0..2....0..1..0..0..0..0..0 %K A219470 nonn %O A219470 1,1 %A A219470 _R. H. Hardin_ Nov 20 2012