A240391 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 two plus the sum of the elements diagonally to its northwest, modulo 4

1, 9, 62, 954, 8656, 142016, 1314136, 21792634, 202647943, 3370994234, 31395506778, 522714912826, 4870472639797, 81112346208261, 755881774461935, 12589433049740763, 117325295715902531, 1954137844293677962

Offset

1,2

Comments

Column 4 of A240394

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
..1..0..3..3....3..2..3..3....1..0..0..0....3..2..0..0....1..2..0..0
..3..2..3..3....1..2..2..3....3..2..0..3....1..0..0..0....3..2..2..0
..1..2..0..1....3..2..0..2....3..2..0..2....3..2..0..0....3..0..0..2

Crossrefs

Sequence in context: A081574 A084151 A346396 * A229701 A341627 A159235

Adjacent sequences: A240388 A240389 A240390 * A240392 A240393 A240394

Keyword

nonn

Author

R. H. Hardin, Apr 04 2014

Status

approved