A239046 Number of nX7 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it, modulo 4.

500, 194936, 68414459, 23966393838, 8374355016629, 2910650412464677, 1009453455314170147, 349787407102201129657, 121125496496197907493593, 41926042184487835842653865, 14508850459207232983300171301

Offset

1,1

Comments

Column 7 of A239047

Links

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

Example

Some solutions for n=2
..0..0..2..2..3..2..3....0..2..0..0..2..0..0....0..0..2..0..0..0..2
..0..3..1..0..3..2..3....0..2..0..0..0..2..0....3..3..2..2..2..0..2

Crossrefs

Sequence in context: A231804 A093250 A214242 * A279275 A097425 A320206

Adjacent sequences: A239043 A239044 A239045 * A239047 A239048 A239049

Keyword

nonn

Author

R. H. Hardin, Mar 09 2014

Status

approved