A241394 Number of n X 4 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 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.

6, 23, 85, 480, 2780, 17211, 102782, 645484, 3936420, 24633252, 150911826, 941907715, 5783836527, 36025719987, 221566632164, 1377925800191, 8486654284672, 52714390850462, 324976079474744, 2016735929148039, 12443708121368662, 77167572875652387, 476406669588897579

Offset

1,1

Links

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

Example

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

Crossrefs

Column 4 of A241397.

Sequence in context: A027043 A006815 A264690 * A054491 A282710 A295132

Adjacent sequences: A241391 A241392 A241393 * A241395 A241396 A241397

Keyword

nonn

Author

R. H. Hardin, Apr 20 2014

Status

approved