A300034 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 864, 5066, 84948, 2004660, 49405101, 1240303182, 31113970216, 788871054393, 20092562629932, 510958535211677, 13009270735109394, 331353822965856875, 8439104261744685317, 214949105704407457675, 5475052418178187648105

Offset

1,2

Comments

Column 7 of A300035.

Links

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

Example

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

Crossrefs

Cf. A300035.

Sequence in context: A097982 A298327 A299220 * A064321 A210408 A299413

Adjacent sequences: A300031 A300032 A300033 * A300035 A300036 A300037

Keyword

nonn

Author

R. H. Hardin, Feb 23 2018

Status

approved