A241358 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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