A302671 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 111, 691, 4267, 42367, 352174, 3204956, 28324200, 248482982, 2223806395, 19612845211, 174147277424, 1545345042448, 13690754212668, 121518036637399, 1077456338230779, 9556752221812425, 84773605649902772, 751847387040101232

Offset

1,2

Comments

Row 5 of A302670.

Links

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

Example

Some solutions for n=5
..0..0..0..1..1. .0..1..1..1..1. .0..0..0..1..1. .0..0..1..1..0
..1..1..1..0..1. .0..0..0..0..1. .1..1..1..0..1. .1..0..0..0..0
..0..0..1..0..0. .1..1..1..1..0. .0..0..1..0..0. .0..1..1..1..1
..0..1..1..0..1. .0..0..0..1..1. .0..0..0..1..0. .0..0..0..0..1
..1..1..0..1..0. .1..1..1..0..0. .1..1..1..1..1. .1..1..1..0..0

Crossrefs

Cf. A302670.

Sequence in context: A259246 A205830 A302228 * A283649 A084450 A043495

Adjacent sequences: A302668 A302669 A302670 * A302672 A302673 A302674

Keyword

nonn

Author

R. H. Hardin, Apr 11 2018

Status

approved