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.
1, 127, 117585, 845613769, 47764170577925, 21369796486647028143, 76019997788404353762724447, 2155668406192527252815282495516543
Offset: 1
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Examples
Some solutions for n=5 ...0...............0...............0...............0...............0 ..-4.-4...........-5..0...........-1..3............6..0............6..1 ...1..2..0........-5..0.-4........-1..4..1.........2..3..6.........2..2.-4 ..-2.-1..2..5......0.-4..1.-2.....-1..5..2.-4.....-2..0..1..2......6..0.-3.-1 ..-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
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