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 A218650 #6 Jul 23 2025 00:02:48 %S A218650 602,24782,3441914,394655980,50119569324,6431987350130, %T A218650 817394844786996,104563780472177342,13375235335809957170, %U A218650 1710137926295211991338,218764828600351495270866,27982536987440234040232618 %N A218650 Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..3 nX7 array. %C A218650 Column 7 of A218651 %H A218650 R. H. Hardin, <a href="/A218650/b218650.txt">Table of n, a(n) for n = 1..34</a> %e A218650 Some solutions for n=3 %e A218650 ..0..0..0..2..2..2..2....0..0..1..2..3..1..1....0..0..0..0..1..2..0 %e A218650 ..0..0..0..3..2..2..1....0..0..1..3..2..1..0....0..0..0..0..2..0..0 %e A218650 ..0..0..0..3..2..1..1....0..0..3..3..2..0..0....0..0..0..3..0..0..0 %K A218650 nonn %O A218650 1,1 %A A218650 _R. H. Hardin_ Nov 03 2012