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A297737
Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.
1
1, 6, 151, 502, 2719, 11341, 82549, 396787, 2346541, 11876657, 70286741, 374560274, 2145325624, 11643190391, 66070482072, 363830683327, 2050031109245, 11362362156585, 63803460702931, 355097907791024, 1990234603016555
OFFSET
1,2
COMMENTS
Row 5 of A297733.
FORMULA
Empirical recurrence of order 80 (see link above)
EXAMPLE
Some solutions for n=7
..1..1..1..0..0..1..1. .0..1..1..0..0..1..1. .0..1..1..0..0..0..0
..1..1..1..0..1..1..0. .1..1..0..0..0..1..1. .0..1..1..0..0..0..0
..0..0..0..0..0..0..0. .0..0..0..1..0..0..0. .1..0..1..0..0..0..0
..1..1..0..1..1..1..0. .0..0..1..1..1..0..0. .0..1..1..0..0..1..1
..0..1..1..1..0..1..1. .0..0..0..0..0..0..0. .0..1..1..0..1..1..0
CROSSREFS
Cf. A297733.
Sequence in context: A232689 A165436 A261066 * A352757 A168654 A147796
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 04 2018
STATUS
approved