A298839 Number of nX6 0..1 arrays with every element equal to 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

0, 41, 513, 7322, 242872, 5918418, 160441457, 4287985074, 114829835558, 3085289326902, 82801989921924, 2223892344859142, 59722476102921078, 1603938095913408003, 43076775918779371087, 1156907815094072294324

Offset

1,2

Comments

Column 6 of A298841.

Links

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

Example

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

Crossrefs

Cf. A298841.

Sequence in context: A177504 A297976 A208048 * A301399 A241622 A276251

Adjacent sequences: A298836 A298837 A298838 * A298840 A298841 A298842

Keyword

nonn

Author

R. H. Hardin, Jan 27 2018

Status

approved