A304008 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

1, 49, 53, 115, 271, 538, 1458, 2973, 7826, 19113, 47074, 115148, 283156, 698411, 1720946, 4258788, 10518418, 26019796, 64391560, 159345205, 394533973, 976872015, 2419079852, 5991435758, 14839400772, 36760610050, 91064615465

Offset

1,2

Comments

Column 6 of A304010.

Links

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

Example

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

Crossrefs

Cf. A304010.

Sequence in context: A346805 A118073 A043300 * A305358 A140388 A044863

Adjacent sequences: A304005 A304006 A304007 * A304009 A304010 A304011

Keyword

nonn

Author

R. H. Hardin, May 04 2018

Status

approved