A183498 Half the number of nX5 0..2 arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors

18, 540, 16512, 524288, 16796160, 536870912, 17180393472, 549761399856, 17592219598848, 562949953421312, 18014402847965184, 576460752303423488, 18446744211148505088, 590295811461438504960, 18889465940274673876992

Offset

1,1

Comments

Column 5 of A183501

Links

R. H. Hardin, Table of n, a(n) for n = 1..29

Example

Some solutions for 3X5
..1..1..2..2..2....2..0..1..2..2....2..0..2..0..2....0..1..2..2..1
..2..0..1..0..2....1..2..0..0..1....1..0..0..0..1....0..0..0..0..0
..0..0..1..2..2....2..2..2..2..1....0..0..2..1..0....2..0..0..2..1

Crossrefs

Sequence in context: A011906 A255859 A334179 * A254381 A177098 A375050

Adjacent sequences: A183495 A183496 A183497 * A183499 A183500 A183501

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved