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A195244
Number of lower triangles of an n X n 0..4 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less
1
5, 65, 2729, 357847, 147824001, 192172956591, 786909681200387, 10151817642632605643, 412697709382902984293947, 52873327059079066189496492173, 21349480944940442832764307444766199
OFFSET
1,1
COMMENTS
Column 4 of A195248
LINKS
EXAMPLE
Some solutions for n=5
..0..........4..........3..........0..........3..........4..........4
..2.0........3.3........1.3........2.2........2.3........4.2........4.4
..2.0.1......2.2.2......1.2.2......4.3.1......4.2.3......4.2.0......2.4.4
..0.2.0.2....0.2.0.1....1.1.2.4....4.3.2.3....2.3.3.3....4.2.0.0....3.3.3.3
..0.1.2.2.1..0.2.2.1.1..1.3.3.4.3..3.3.2.3.2..4.3.1.2.4..3.2.1.2.0..1.3.1.2.1
CROSSREFS
Sequence in context: A196975 A247540 A171800 * A162080 A012476 A195516
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 13 2011
STATUS
approved