A240457 Number of nX3 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 or one plus the sum of the elements diagonally to its northwest, modulo 4

8, 89, 874, 8187, 75167, 682018, 6147372, 55212526, 494809053, 4428808128, 39611173178, 354127003547, 3165102684053, 28284608888395, 252739519980209, 2258253806476180, 20177086997089514, 180275181902738316

Offset

1,1

Comments

Column 3 of A240460

Links

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

Example

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

Crossrefs

Sequence in context: A137494 A068498 A061000 * A319842 A072352 A099100

Adjacent sequences: A240454 A240455 A240456 * A240458 A240459 A240460

Keyword

nonn

Author

R. H. Hardin, Apr 05 2014

Status

approved