A298131 Number of nX6 0..1 arrays with every element equal to 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

0, 25, 223, 1055, 21537, 285084, 3752401, 52922003, 714854991, 9882443650, 135778074542, 1864072607185, 25646093419747, 352488786489609, 4845708865503389, 66618364620496743, 915822218872378347

Offset

1,2

Comments

Column 6 of A298133.

Links

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

Example

Some solutions for n=5
..0..0..1..0..0..0. .0..0..1..1..0..0. .0..0..1..1..0..0. .0..0..0..1..1..1
..0..1..0..1..1..0. .0..1..0..1..1..0. .0..1..0..0..1..0. .0..1..1..0..0..1
..0..1..1..0..1..0. .0..1..0..0..1..1. .0..0..1..1..0..0. .1..1..0..1..0..1
..0..0..1..0..0..1. .1..0..1..0..1..0. .1..1..0..1..0..1. .0..1..0..1..0..1
..0..1..1..0..1..1. .1..1..0..1..0..0. .1..1..0..0..1..1. .0..0..0..0..1..1

Crossrefs

Cf. A298133.

Sequence in context: A224419 A297864 A065939 * A077346 A351470 A045785

Adjacent sequences: A298128 A298129 A298130 * A298132 A298133 A298134

Keyword

nonn

Author

R. H. Hardin, Jan 13 2018

Status

approved