A304891 - OEIS

A304891

Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

1, 82, 94, 899, 3145, 17391, 86300, 437461, 2277571, 11492900, 60156404, 306899369, 1592419598, 8187075642, 42311055045, 218129290363, 1125759300450, 5808300715519, 29967632840201, 154636015329351, 797834530565253

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OFFSET

1,2

COMMENTS

Column 5 of A304894.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304894.

Sequence in context: A025370 A282114 A099067 * A316573 A294308 A025361

Adjacent sequences: A304888 A304889 A304890 * A304892 A304893 A304894

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 20 2018

STATUS

approved