A300258 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

64, 7181, 243312, 9424684, 385299869, 15475106013, 620657860617, 24999315059414, 1006615871837972, 40521173928016298, 1631581961066452908, 65698440053897709511, 2645417739842159703117, 106522009490929860170171

Offset

1,1

Comments

Column 7 of A300259.

Links

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

Example

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

Crossrefs

Cf. A300259.

Sequence in context: A299000 A299745 A299667 * A180377 A013995 A264007

Adjacent sequences: A300255 A300256 A300257 * A300259 A300260 A300261

Keyword

nonn

Author

R. H. Hardin, Mar 01 2018

Status

approved