A195220 -id:A195220 - cp's OEIS frontend

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

R. H. Hardin Sep 13 2011

nonn

Column 6 of A195220

			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

A195219 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 7 or less and triangles differing by a constant counted only once.

Original entry on oeis.org

1, 169, 239891, 3048698613, 350767341744137, 368448539594713382337, 3546881146489163009435488735

Offset: 1

R. H. Hardin Sep 13 2011

nonn

Column 7 of A195220

			Some solutions for n=5
...0...............0...............0...............0...............0
...3..5............0..0............1..7............0.-3...........-5.-2
..-1.-1.-2.........6..0.-4.........2..0..0........-2.-1.-2........-5..1.-5
...2.-1..0..1......5..1.-3.-1......3..2..7..4.....-1..5..3..4.....-6.-5.-3.-9
...2.-3.-6.-5.-4...3..2..2.-3.-3..-3..2..6..8..1...3.-1..5..1..2..-2.-2.-2.-6-12

cp's OEIS Frontend

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.

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