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A303034
Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
0
1, 3, 14, 74, 703, 13597, 345668, 13840842, 1107624272, 184266124741
OFFSET
1,2
COMMENTS
Diagonal of A303040.
EXAMPLE
Some solutions for n=5
..0..0..0..1..0. .0..1..1..1..0. .0..1..0..0..0. .0..0..1..1..0
..0..1..0..1..0. .1..1..1..1..1. .0..1..1..1..0. .0..1..0..1..0
..0..1..0..1..0. .1..1..0..1..1. .1..0..1..1..1. .0..1..0..1..0
..0..1..0..1..0. .0..1..0..1..0. .0..0..0..1..0. .0..1..0..1..0
..0..1..1..0..0. .0..1..0..1..0. .1..0..0..0..1. .0..1..0..0..0
CROSSREFS
Cf. A303040.
Sequence in context: A074549 A245246 A126122 * A026004 A200718 A063016
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 17 2018
STATUS
approved