A241358 Number of 3 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

4, 3, 19, 51, 61, 230, 641, 960, 3746, 9339, 16659, 60981, 137870, 288484, 962239, 2106198, 4825844, 14944563, 32681302, 79714689, 232184355, 513198469, 1304385350, 3611732771, 8129991862, 21132067461, 56282787035, 129448737499

Offset

1,1

Comments

Row 3 of A241356.

Links

R. H. Hardin, Table of n, a(n) for n = 1..194

Example

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

Crossrefs

Cf. A241356.

Sequence in context: A161893 A192773 A183231 * A178417 A178628 A345125

Adjacent sequences: A241355 A241356 A241357 * A241359 A241360 A241361

Keyword

nonn

Author

R. H. Hardin, Apr 20 2014

Status

approved