A299387 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

64, 301, 115, 448, 1112, 1852, 4929, 11412, 24191, 59037, 137098, 312216, 728670, 1685304, 3910660, 9066080, 21026361, 48798033, 113138469, 262500850, 609384725, 1413457638, 3280851818, 7614781353, 17670627214, 41015215732, 95198485725

Offset

1,1

Comments

Column 7 of A299388.

Links

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

Example

Some solutions for n=7
..0..1..0..0..1..1..0. .0..0..1..0..0..1..1. .0..0..0..1..0..0..1
..0..1..1..1..0..0..0. .1..0..1..1..1..0..0. .0..1..0..1..1..0..1
..0..1..1..1..0..0..0. .0..1..0..1..0..1..0. .0..0..0..1..1..0..0
..1..1..1..1..1..0..1. .0..1..1..1..1..1..1. .1..1..1..1..1..1..1
..0..0..0..1..1..0..1. .1..0..1..1..1..0..0. .0..1..1..1..0..1..0
..0..1..0..1..1..1..0. .1..0..1..1..1..0..1. .0..1..1..1..0..0..1
..0..0..0..1..0..1..0. .1..0..1..0..0..1..0. .0..1..0..0..1..0..1

Crossrefs

Cf. A299388.

Sequence in context: A297888 A298493 A298293 * A299186 A299947 A372093

Adjacent sequences: A299384 A299385 A299386 * A299388 A299389 A299390

Keyword

nonn

Author

R. H. Hardin, Feb 09 2018

Status

approved