A298658 - OEIS

A298658

Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

5, 49, 34, 173, 431, 1116, 2562, 6711, 17405, 48462, 125671, 334571, 901387, 2398458, 6398293, 17158639, 45911441, 122885609, 329214517, 881849126, 2361859125, 6328533398, 16955926709, 45429854362, 121730159805, 326179436515

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OFFSET

1,1

COMMENTS

Column 6 of A298660.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298660.

Sequence in context: A298091 A298053 A298886 * A299610 A079837 A297957

Adjacent sequences: A298655 A298656 A298657 * A298659 A298660 A298661

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 24 2018

STATUS

approved