A298239 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

1, 1192, 8908, 563826, 25784604, 1300110664, 67668568376, 3503621681315, 183337397269876, 9580139850529722, 501450855511836431, 26249321266812736651, 1374275292682758982227, 71956139835909994580006

Offset

1,2

Comments

Column 7 of A298240.

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..1..1. .0..0..1..1..1..1..1
..1..0..1..0..1..1..1. .0..0..1..1..0..0..1. .1..0..0..1..0..1..0
..0..0..1..1..0..0..0. .0..0..1..1..0..1..0. .0..0..1..0..0..0..0
..0..0..1..1..0..1..0. .0..0..1..0..1..0..0. .0..0..1..0..1..1..0
..0..0..1..1..0..0..0. .0..0..1..1..0..0..1. .0..0..1..1..1..0..0

Crossrefs

Cf. A298240.

Sequence in context: A158735 A035860 A290843 * A299365 A299134 A299892

Adjacent sequences: A298236 A298237 A298238 * A298240 A298241 A298242

Keyword

nonn

Author

R. H. Hardin, Jan 15 2018

Status

approved