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A195218 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 6 or less and triangles differing by a constant counted only once 0

%I #5 Dec 18 2015 18:17:45

%S 1,127,117585,845613769,47764170577925,21369796486647028143,

%T 76019997788404353762724447,2155668406192527252815282495516543

%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 6 or less and triangles differing by a constant counted only once

%C Column 6 of A195220

%e Some solutions for n=5

%e ...0...............0...............0...............0...............0

%e ..-4.-4...........-5..0...........-1..3............6..0............6..1

%e ...1..2..0........-5..0.-4........-1..4..1.........2..3..6.........2..2.-4

%e ..-2.-1..2..5......0.-4..1.-2.....-1..5..2.-4.....-2..0..1..2......6..0.-3.-1

%e ..-6.-2.-1..0..2...2..1..0.-5.-1...0..5.-1..0.-5..-6..0..3..4..5...3..1..0.-4.-1

%K nonn

%O 1,2

%A _R. H. Hardin_ Sep 13 2011

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Last modified April 19 12:06 EDT 2024. Contains 371792 sequences. (Running on oeis4.)