A299227 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

8, 2907, 128610, 4532025, 173234478, 6766315496, 260938102438, 10077166692402, 389637415718865, 15058710314116325, 581977479263622822, 22493737410496748938, 869383064950398158845, 33601436598811749671626

Offset

1,1

Comments

Column 7 of A299228.

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..0..1..1..1..1..1. .0..0..1..0..1..1..0
..0..1..0..0..1..1..0. .0..1..0..1..1..0..0. .0..1..0..0..1..1..0
..0..1..0..1..1..1..1. .0..1..0..1..1..1..1. .0..1..0..1..1..1..1
..0..0..0..1..1..0..1. .0..0..0..1..0..1..0. .0..0..0..1..1..1..1
..0..0..1..0..0..0..0. .0..0..1..0..1..0..0. .0..0..1..1..1..0..0

Crossrefs

Cf. A299228.

Sequence in context: A298546 A298336 A299397 * A300039 A282187 A217270

Adjacent sequences: A299224 A299225 A299226 * A299228 A299229 A299230

Keyword

nonn

Author

R. H. Hardin, Feb 05 2018

Status

approved