A305339 - OEIS

A305339

Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero.

64, 101, 431, 3186, 23348, 176673, 1321695, 9959836, 75112075, 566241938, 4269343299, 32193597374, 242759393636, 1830541536206, 13803437729415, 104086731979129, 784879875501723, 5918493129030554, 44629209229558533

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 7 of A305340.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305340.

Sequence in context: A088033 A303960 A304603 * A304925 A316419 A306165

Adjacent sequences: A305336 A305337 A305338 * A305340 A305341 A305342

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 30 2018

STATUS

approved