A240298 Number of 4Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4

4, 56, 974, 12164, 180886, 2228098, 31650312, 390211138, 5426848414, 67338401270, 924586466428, 11556584240334, 157226907539810, 1978592816499310, 26727350706141760, 338342532540889892, 4544157885733729912

Offset

1,1

Comments

Row 4 of A240295

Links

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

Example

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

Crossrefs

Sequence in context: A111874 A297944 A298555 * A298383 A326289 A369534

Adjacent sequences: A240295 A240296 A240297 * A240299 A240300 A240301

Keyword

nonn

Author

R. H. Hardin, Apr 03 2014

Status

approved