%I #5 Dec 18 2015 18:17:45
%S 1,91,51205,189677411,4677360495205,774355028021195459,
%T 863969905606597340602967,6512935591253221256126051469607
%N Number of lower triangles of an n X n integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by 5 or less and triangles differing by a constant counted only once
%C Column 5 of A195220
%e Some solutions for n=5
%e ...0...............0...............0...............0...............0
%e ...3..3............2.-2...........-1.-2...........-3..0............4..1
%e ...2..0..4.........0..3.-1.........1..3.-1.........0..2..3.........6..2..5
%e ..-2..0..2..1......1.-2.-1.-5......5..2..2.-2.....-3.-2.-2.-1......3..5..6..8
%e ...0..3..0.-1..3...0.-1.-5..0.-3...3..1.-2.-3..2...1..0..0.-1.-3...6..5..6..3..3
%K nonn
%O 1,2
%A _R. H. Hardin_ Sep 13 2011
|