A298443 Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

1, 22, 86, 406, 3963, 72509, 610525, 9392919, 119508030, 1732328018, 23999922911, 340723206746, 4837106387318, 68861322126222, 979990257263793, 13966057949592703, 199007337584181820, 2836767273608895105

Offset

1,2

Comments

Column 7 of A298444.

Links

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

Example

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

Crossrefs

Cf. A298444.

Sequence in context: A044209 A044590 A125243 * A197720 A195323 A041940

Adjacent sequences: A298440 A298441 A298442 * A298444 A298445 A298446

Keyword

nonn

Author

_R. H. Hardin_, Jan 19 2018

Status

approved