cp's OEIS Frontend

A195229 Number of lower triangles of an n X n 0..5 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by one or less.

%I A195229 #8 Jul 22 2025 12:41:26
%S A195229 6,36,428,9982,459880,42029278,7640055854,2767861764930,
%T A195229 2001526172413328,2892451174381411040,8361331814456905846790,
%U A195229 48387254396810574882721328,560941284568012233398098984786,13033945031291662448750033149621602
%N A195229 Number of lower triangles of an n X n 0..5 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by one or less.
%C A195229 Column 5 of A195232
%H A195229 R. H. Hardin, <a href="/A195229/b195229.txt">Table of n, a(n) for n = 1..15</a>
%e A195229 Some solutions for n=4
%e A195229 ..0........3........0........4........0........2........2........2
%e A195229 ..1.1......4.4......1.0......4.4......1.1......1.1......1.2......3.2
%e A195229 ..0.1.0....4.3.3....1.0.1....4.5.5....2.1.1....2.1.1....2.2.2....3.3.2
%e A195229 ..1.0.1.0..4.4.3.3..1.1.1.2..4.4.5.5..2.1.1.1..2.1.1.2..3.3.2.1..2.3.2.2
%K A195229 nonn
%O A195229 1,1
%A A195229 _R. H. Hardin_ Sep 13 2011