A240430 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4

4, 58, 970, 9036, 150350, 1404008, 23414762, 218412550, 3639548326, 33928317272, 565198473852, 5267841718242, 87745216566886, 817765637634342, 13620854198296482, 126940929173612092, 2114328019146903908

Offset

1,1

Comments

Column 4 of A240433

Links

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

Example

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

Crossrefs

Sequence in context: A099348 A197177 A155668 * A334991 A216795 A216352

Adjacent sequences: A240427 A240428 A240429 * A240431 A240432 A240433

Keyword

nonn

Author

R. H. Hardin, Apr 04 2014

Status

approved