A298388 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

8, 2048, 13075, 135226, 2837337, 38706835, 509195874, 8032883165, 118750882425, 1707709022909, 25502618858251, 378609557364591, 5566330211694048, 82417823620354907, 1220987680054491593, 18041261703098651443

Offset

1,1

Comments

Column 7 of A298389.

Links

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

Example

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

Crossrefs

Cf. A298389.

Sequence in context: A298559 A298769 A299566 * A299306 A299464 A300107

Adjacent sequences: A298385 A298386 A298387 * A298389 A298390 A298391

Keyword

nonn

Author

R. H. Hardin, Jan 18 2018

Status

approved