A302731 Number of 6Xn 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 162, 1079, 941, 4491, 20842, 89121, 286746, 1022779, 4520360, 18491493, 67714259, 259145846, 1045498404, 4177884352, 16077695845, 62395241080, 246809269806, 974367008077, 3802389262429, 14855944546521, 58398777429077

Offset

1,2

Comments

Row 6 of A302728.

Links

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

Example

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

Crossrefs

Cf. A302728.

Sequence in context: A302283 A186844 A319915 * A206145 A342850 A304166

Adjacent sequences: A302728 A302729 A302730 * A302732 A302733 A302734

Keyword

nonn

Author

R. H. Hardin, Apr 12 2018

Status

approved