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A289647
Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
1
0, 44, 607, 8554, 121162, 1756800, 25760875, 382162921, 5717697619, 86172849366, 1306560879457, 19912006342895, 304785181627320, 4682731916448540, 72178508386597722, 1115665066715856620, 17287052005230219381
OFFSET
1,2
COMMENTS
Column 4 of A289651.
LINKS
EXAMPLE
Some solutions for n=4
..1..0..1..1. .1..0..1..0. .0..0..1..1. .1..1..0..1. .1..0..1..1
..0..0..1..1. .1..0..0..1. .0..1..0..0. .0..0..0..1. .0..0..1..0
..0..0..1..0. .0..0..0..1. .0..1..1..0. .0..0..0..0. .0..0..0..1
..1..0..0..0. .0..1..1..0. .1..0..0..0. .0..0..0..1. .1..0..0..1
CROSSREFS
Cf. A289651.
Sequence in context: A297680 A264680 A356415 * A252869 A296649 A221505
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 09 2017
STATUS
approved