A298500 Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

21, 203, 20, 467, 2353, 1602, 24272, 118439, 372820, 3857775, 22638601, 135423787, 1109353612, 7371311350, 51327931415, 387280908485, 2703270862580, 19437454766314, 142684818408113, 1015214265364529, 7343824393757918

Offset

1,1

Comments

Column 7 of A298501.

Links

R. H. Hardin, Table of n, a(n) for n = 1..145

Example

Some solutions for n=6
..0..1..0..1..1..1..1. .0..1..0..0..1..0..1. .0..1..0..1..1..0..1
..1..1..1..0..1..0..0. .0..1..0..0..1..0..1. .0..1..0..1..1..0..1
..1..0..0..0..1..0..0. .1..1..0..1..1..0..0. .1..1..0..0..1..0..0
..1..1..1..0..1..1..1. .1..1..0..0..1..0..1. .0..1..0..0..1..0..0
..0..1..0..1..1..0..0. .0..1..0..1..1..0..0. .1..1..0..1..1..0..1
..1..0..0..0..0..0..0. .0..1..0..1..1..0..0. .1..1..0..1..1..0..1

Crossrefs

Cf. A298501.

Sequence in context: A125384 A126542 A297906 * A298319 A299392 A299193

Adjacent sequences: A298497 A298498 A298499 * A298501 A298502 A298503

Keyword

nonn

Author

R. H. Hardin, Jan 20 2018

Status

approved