A297856 Number of nX6 0..1 arrays with every element equal to 1, 2 or 4 king-move adjacent elements, with upper left element zero.

5, 49, 33, 90, 81, 131, 146, 252, 320, 522, 705, 1188, 1654, 2554, 4086, 6240, 9384, 14677, 22912, 34760, 54598, 85044, 131603, 204203, 317467, 494005, 767077, 1194926, 1861059, 2894147, 4502964, 7013005, 10913427, 17000934, 26479606

Offset

1,1

Comments

Column 6 of A297858.

Links

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

Example

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

Crossrefs

Cf. A297858.

Sequence in context: A224510 A333982 A063429 * A298091 A298053 A298886

Adjacent sequences: A297853 A297854 A297855 * A297857 A297858 A297859

Keyword

nonn

Author

R. H. Hardin, Jan 07 2018

Status

approved