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A285751
Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
1
0, 4, 8, 44, 150, 540, 2042, 7760, 29654, 114336, 442152, 1713832, 6655764, 25893236, 100873154, 393455752, 1536357188, 6005069488, 23492496948, 91979426392, 360391230046, 1413045432264, 5543910852492, 21763924972776, 85487754197390
OFFSET
1,2
COMMENTS
Row 2 of A285750.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..1. .1..1..0..0. .0..1..0..0. .0..0..0..0. .1..1..0..0
..0..0..0..0. .0..1..1..0. .1..1..0..0. .0..0..0..1. .0..1..0..0
CROSSREFS
Cf. A285750.
Sequence in context: A284972 A045639 A337782 * A189538 A351071 A270352
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 25 2017
STATUS
approved