A278278 Number of nX6 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

0, 109, 3723, 172091, 7466627, 329985827, 14526103064, 640011857446, 28192246592564, 1241921389868057, 54708244420668156, 2409976614356023808, 106162841585764737411, 4676622598537493878129, 206011798163918590188603

Offset

1,2

Comments

Column 6 of A278280.

Links

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

R. H. Hardin, Empirical recurrence of order 98

Formula

Empirical recurrence of order 98 (see link above)

Example

Some solutions for n=4
..0..1..0..0..1..1. .0..0..1..1..0..0. .0..0..1..0..1..0. .0..0..0..1..1..0
..0..1..1..1..1..0. .1..0..0..1..1..1. .1..0..1..0..1..0. .1..1..1..1..0..0
..0..0..0..0..1..0. .1..1..0..0..1..1. .1..1..0..1..1..0. .1..0..0..1..0..1
..1..1..1..0..0..0. .0..0..1..1..0..0. .0..0..1..0..0..1. .0..1..0..0..0..1

Crossrefs

Cf. A278280.

Sequence in context: A232198 A232416 A333116 * A280626 A357231 A227949

Adjacent sequences: A278275 A278276 A278277 * A278279 A278280 A278281

Keyword

nonn

Author

R. H. Hardin, Nov 16 2016

Status

approved