A299688 Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

21, 348, 3226, 159324, 3247879, 120453362, 4582634341, 154482346317, 5662974500151, 210384261219346, 7559261180323415, 276878327636310469, 10159747543598303848, 370022548604712000777, 13533405466101387449313

Offset

1,1

Comments

Column 7 of A299689.

Links

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

Example

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

Crossrefs

Cf. A299689.

Sequence in context: A299885 A299051 A299813 * A300320 A271633 A184289

Adjacent sequences: A299685 A299686 A299687 * A299689 A299690 A299691

Keyword

nonn

Author

R. H. Hardin, Feb 16 2018

Status

approved