A183497 Half the number of nX4 0..2 arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors

8, 128, 2088, 33057, 524288, 8388608, 134226432, 2147483648, 34360795152, 549755813888, 8796095152128, 140737488355328, 2251799813685248, 36028801316028672, 576460752842391552, 9223372036854775808

Offset

1,1

Comments

Column 4 of A183501

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X4
..2..1..0..2....0..0..2..1....1..2..0..1....0..0..1..1....2..2..1..1
..2..1..2..0....1..0..2..0....0..2..1..2....2..1..2..2....1..1..2..1
..1..0..2..1....2..2..1..2....1..0..1..1....0..2..2..0....0..0..0..0

Crossrefs

Sequence in context: A317513 A300178 A013777 * A370102 A237023 A156270

Adjacent sequences: A183494 A183495 A183496 * A183498 A183499 A183500

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved