A298845 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

8, 1933, 3820, 14888, 62393, 290474, 1276034, 5745665, 26250580, 117940632, 529830532, 2398014801, 10851357559, 49048617886, 221887809644, 1004033294806, 4542287520456, 20553927069804, 93029936095342, 421086056398025

Offset

1,1

Comments

Column 7 of A298846.

Links

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

Example

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

Crossrefs

Cf. A298846.

Sequence in context: A027515 A297822 A297992 * A298652 A299606 A302223

Adjacent sequences: A298842 A298843 A298844 * A298846 A298847 A298848

Keyword

nonn

Author

R. H. Hardin, Jan 27 2018

Status

approved