A239043 Number of n X 4 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it, modulo 4.

38, 1187, 34344, 996325, 28827920, 831472462, 23966393838, 690533224800, 19889264165241, 572800898558670, 16495673342248420, 475029183687749411, 13679240504824830042, 393913243384994226842, 11343249595637879111211

Offset

1,1

Comments

Column 4 of A239047.

Links

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

Example

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

Crossrefs

Cf. A239047.

Sequence in context: A255496 A098612 A268739 * A137030 A027657 A268885

Adjacent sequences: A239040 A239041 A239042 * A239044 A239045 A239046

Keyword

nonn

Author

R. H. Hardin, Mar 09 2014

Status

approved