A241437 Number of 3 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

4, 2, 22, 74, 158, 448, 1272, 3284, 8331, 23365, 63819, 159963, 450553, 1178189, 3085252, 8574583, 21981254, 59397292, 161093107, 416692229, 1133829778, 3023012096, 7951525097, 21508340343, 56988406704, 151552827477, 406957891025

Offset

1,1

Comments

Row 3 of A241435.

Links

R. H. Hardin, Table of n, a(n) for n = 1..170

Example

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

Crossrefs

Cf. A241435.

Sequence in context: A285439 A336598 A336601 * A030211 A134461 A298593

Adjacent sequences: A241434 A241435 A241436 * A241438 A241439 A241440

Keyword

nonn

Author

R. H. Hardin, Apr 22 2014

Status

approved