A239339 Number of nX7 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of elements above it, modulo 4.

368, 152260, 54774178, 19117551262, 6693244281896, 2331550702010844, 808844678734652790, 280328352590045292898, 97098324777969236740601, 33612953785570810824523855, 11632488891977131786485508436

Offset

1,1

Comments

Column 7 of A239340

Links

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

Example

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

Crossrefs

Sequence in context: A396987 A097501 A239411 * A396875 A352224 A294597

Adjacent sequences: A239336 A239337 A239338 * A239340 A239341 A239342

Keyword

nonn

Author

R. H. Hardin, Mar 16 2014

Status

approved