A296633 Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.

21, 286, 3581, 44783, 565149, 7121315, 89713772, 1130293195, 14240708558, 179419300176, 2260512981540, 28480330069267, 358825298187419, 4520860415119973, 56958579395700728, 717624409759413294

Offset

1,1

Comments

Column 6 of A296635.

Links

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

Example

Some solutions for n=4
..1..1..0..0..0..0. .0..0..0..0..1..0. .0..0..0..1..0..0. .1..0..0..0..0..0
..1..0..1..1..1..0. .0..1..0..0..0..1. .1..1..0..0..0..0. .0..1..1..0..0..0
..0..0..1..1..0..1. .0..0..0..0..1..1. .1..0..0..1..1..0. .0..1..0..0..0..0
..0..0..1..0..1..1. .0..0..0..0..0..0. .0..1..0..1..0..0. .0..0..1..0..0..1

Crossrefs

Cf. A296635.

Sequence in context: A125456 A296333 A028028 * A025971 A346844 A188710

Adjacent sequences: A296630 A296631 A296632 * A296634 A296635 A296636

Keyword

nonn

Author

R. H. Hardin, Dec 17 2017

Status

approved