A239028 Number of nX6 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, 7, 22, 189, 757, 7265, 33699, 339315, 1719471, 17562449, 93885393, 958423704, 5294453737, 53749275243, 303098123295, 3057605672892, 17472132232105, 175268385351709, 1010298392497549, 10088889232010085, 58495304591252863

Offset

1,2

Comments

Column 6 of A239030

Links

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

R. H. Hardin, Empirical recurrence of order 90

Formula

Empirical recurrence of order 90 (see link above)

Example

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

Crossrefs

Sequence in context: A380063 A330089 A000835 * A335638 A197991 A197853

Adjacent sequences: A239025 A239026 A239027 * A239029 A239030 A239031

Keyword

nonn

Author

R. H. Hardin, Mar 09 2014

Status

approved