A240379 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4

4, 90, 1494, 17550, 281186, 3502886, 52375114, 672652728, 9771038498, 127878632630, 1824118827422, 24208448126400, 341050301141278, 4570912937279916, 63851040871974536, 861645931638541286

Offset

1,1

Comments

Column 4 of A240381

Links

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

Example

Some solutions for n=4
..3..1..1..3....1..3..3..1....3..1..1..3....3..1..1..3....1..3..3..1
..3..0..2..3....1..0..0..0....3..2..2..0....3..0..2..0....1..2..0..0
..1..0..2..1....1..3..3..1....2..0..3..2....2..0..0..0....3..0..0..0
..3..0..2..2....3..2..3..3....1..3..2..1....1..0..0..0....1..2..0..1

Crossrefs

Sequence in context: A218385 A189882 A067767 * A304190 A362603 A274056

Adjacent sequences: A240376 A240377 A240378 * A240380 A240381 A240382

Keyword

nonn

Author

R. H. Hardin, Apr 04 2014

Status

approved