A240268 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

24, 157, 919, 8265, 49921, 382690, 3076452, 19781372, 154994425, 1144262410, 7794166168, 60672207307, 432430357219, 3074960725990, 23390892029200, 165455143739679, 1206985642463001, 8980338421458244, 63888419650679414

Offset

1,1

Comments

Column 4 of A240271

Links

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

Example

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

Crossrefs

Sequence in context: A125334 A126492 A222002 * A231341 A186862 A305165

Adjacent sequences: A240265 A240266 A240267 * A240269 A240270 A240271

Keyword

nonn

Author

R. H. Hardin, Apr 03 2014

Status

approved