A297921 Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 4 king-move adjacent elements, with upper left element zero.

5, 793, 18451, 366976, 7960069, 173216147, 3751364813, 81401727872, 1766726336073, 38339105704330, 832050074637694, 18057979242252331, 391910474843289621, 8505610543942748030, 184597240091316219578

Offset

1,1

Comments

Column 6 of A297923.

Links

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

Example

Some solutions for n=3
..0..0..1..1..0..0. .0..1..0..0..0..1. .0..1..1..1..0..1. .0..0..0..0..1..0
..0..0..0..1..1..1. .0..0..1..1..1..0. .0..0..0..1..0..1. .0..0..1..1..0..1
..1..1..1..0..0..1. .1..1..0..0..1..0. .1..1..0..0..0..0. .1..1..1..1..0..0

Crossrefs

Cf. A297923.

Sequence in context: A332175 A195612 A051304 * A298545 A298335 A299396

Adjacent sequences: A297918 A297919 A297920 * A297922 A297923 A297924

Keyword

nonn

Author

R. H. Hardin, Jan 08 2018

Status

approved