A240758 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4

25, 42, 142, 348, 653, 1809, 3606, 8307, 20609, 42658, 103913, 235174, 519261, 1234747, 2728224, 6283093, 14453348, 32323190, 74859774, 169422762, 385308220, 885034945, 2001772191, 4581389621, 10446058187, 23735064262, 54294354277

Offset

1,1

Comments

Column 4 of A240760

Links

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

Example

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

Crossrefs

Sequence in context: A195564 A147287 A381791 * A031331 A236838 A138091

Adjacent sequences: A240755 A240756 A240757 * A240759 A240760 A240761

Keyword

nonn

Author

R. H. Hardin, Apr 12 2014

Status

approved