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A194503 Number of lower triangles of an n X n 0..6 array with each element unequal to the sum mod 7 of its horizontal and vertical neighbors 0
6, 216, 46872, 60466140, 470184984576, 21936950640377856 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A194505

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 3X3

..1......3......6......0......1......2......5......0......4......2......4

..2.2....4.6....3.2....5.6....0.3....5.2....4.1....6.2....5.5....0.1....1.3

..5.2.3..6.0.5..4.0.6..3.3.6..0.5.3..3.2.1..0.2.6..1.6.5..6.6.1..5.2.0..4.1.6

CROSSREFS

Sequence in context: A281431 A109354 A193613 * A229869 A234610 A041623

Adjacent sequences:  A194500 A194501 A194502 * A194504 A194505 A194506

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 27 2011

STATUS

approved

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Last modified October 26 06:55 EDT 2021. Contains 348257 sequences. (Running on oeis4.)