A239982 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 one plus the sum of the elements diagonally to its northwest, modulo 4

1, 5, 22, 171, 1391, 9079, 70107, 514297, 3533132, 27478686, 195617485, 1396299371, 10574699363, 74869696354, 547239827048, 4060652644276, 28932235350938, 213204213265435, 1560042805514282, 11221251973358733, 82689323867874597

Offset

1,2

Comments

Column 4 of A239986

Links

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

Example

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

Crossrefs

Sequence in context: A346410 A121942 A006294 * A129437 A048252 A356773

Adjacent sequences: A239979 A239980 A239981 * A239983 A239984 A239985

Keyword

nonn

Author

R. H. Hardin, Mar 30 2014

Status

approved