A297737 Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.

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.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 80

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

Adjacent sequences: A297734 A297735 A297736 * A297738 A297739 A297740

Keyword

nonn

Author

R. H. Hardin, Jan 04 2018

Status

approved