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A284225 Number of 4 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. 1
8, 62, 467, 6511, 85887, 1214427, 17538010, 258414316, 3854276528, 58011648676, 879122723506, 13394856893254, 204995150323546, 3148797878923546, 48517163038369066, 749553577633265717, 11606806249286351346 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A284222.
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..1. .0..0..0..1. .0..1..0..0. .0..1..1..1. .0..0..1..1
..1..1..1..0. .0..0..0..1. .1..1..0..1. .1..1..0..0. .1..0..0..0
..0..1..0..0. .0..1..0..1. .0..0..1..1. .1..0..1..0. .0..0..0..0
..1..1..1..0. .0..1..0..1. .1..0..0..1. .1..0..0..0. .1..1..1..1
CROSSREFS
Cf. A284222.
Sequence in context: A167251 A227439 A144143 * A229011 A126628 A085353
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 23 2017
STATUS
approved

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Last modified April 22 16:49 EDT 2024. Contains 371905 sequences. (Running on oeis4.)