A298886 Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

5, 49, 34, 141, 243, 516, 814, 1646, 3312, 6565, 13040, 25941, 51679, 103895, 205265, 411011, 821599, 1643914, 3279755, 6573928, 13136700, 26293574, 52604464, 105288984, 210671989, 421821199, 844171966, 1689881070, 3382803573

Offset

1,1

Comments

Column 6 of A298888.

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

Crossrefs

Cf. A298888.

Sequence in context: A297856 A298091 A298053 * A298658 A299610 A079837

Adjacent sequences: A298883 A298884 A298885 * A298887 A298888 A298889

Keyword

nonn

Author

R. H. Hardin, Jan 28 2018

Status

approved