A239029 Number of nX7 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of elements above it, modulo 3

1, 8, 29, 306, 1495, 18362, 107611, 1435014, 9453266, 131139508, 930867565, 13097850256, 97472804219, 1373719026116, 10536457574723, 147977950815572, 1157525035823201, 16176954064274638, 128205153484308223

Offset

1,2

Comments

Column 7 of A239030

Links

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

Example

Some solutions for n=5
..2..0..0..0..0..0..0....2..0..0..0..0..0..0....2..0..0..0..0..0..0
..2..0..0..0..0..0..0....1..2..2..0..0..0..0....1..2..2..0..0..0..0
..1..0..2..2..0..0..0....2..1..1..0..2..2..0....2..1..2..0..0..0..0
..2..0..1..1..0..2..2....1..0..2..2..1..1..2....2..0..0..0..0..0..0
..1..0..0..2..2..1..1....2..0..1..1..0..0..2....1..0..0..0..0..0..0

Crossrefs

Sequence in context: A110527 A189946 A239855 * A071931 A333657 A074670

Adjacent sequences: A239026 A239027 A239028 * A239030 A239031 A239032

Keyword

nonn

Author

R. H. Hardin, Mar 09 2014

Status

approved