A297957 Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

5, 49, 109, 779, 2596, 11283, 61204, 284304, 1375342, 6952910, 34481150, 170526375, 851167905, 4246845842, 21142550887, 105387070394, 525656312520, 2620783997147, 13066690252443, 65162285094742, 324954134100762

Offset

1,1

Comments

Column 6 of A297959.

Links

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

Example

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

Crossrefs

Cf. A297959.

Sequence in context: A298658 A299610 A079837 * A298773 A298580 A299572

Adjacent sequences: A297954 A297955 A297956 * A297958 A297959 A297960

Keyword

nonn

Author

R. H. Hardin, Jan 09 2018

Status

approved