A298955 Number of nX6 0..1 arrays with every element equal to 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 5, 5, 11, 22, 102, 390, 1990, 8875, 42338, 200422, 1001873, 4864576, 24344988, 120791381, 599718216, 2979586795, 14824136258, 73594777737, 365973623961, 1819455689317, 9043962959653, 44964812729586, 223577501339948

Offset

1,2

Comments

Column 6 of A298957.

Links

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

Example

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

Crossrefs

Cf. A298957.

Sequence in context: A298165 A301800 A214827 * A299591 A350920 A173316

Adjacent sequences: A298952 A298953 A298954 * A298956 A298957 A298958

Keyword

nonn

Author

R. H. Hardin, Jan 30 2018

Status

approved