A305346 - OEIS

A305346

Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

21, 237, 245, 1074, 4685, 17054, 64658, 259281, 981360, 3731097, 14545752, 55903882, 213884003, 825770439, 3180306376, 12211473431, 47015069105, 181022736584, 696091000166, 2678377345408, 10308709813612, 39659264124397

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OFFSET

1,1

COMMENTS

Column 7 of A305347.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305347.

Sequence in context: A360854 A303968 A304930 * A316614 A304668 A306171

Adjacent sequences: A305343 A305344 A305345 * A305347 A305348 A305349

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 30 2018

STATUS

approved