A251116 Number of (n+1)X(3+1) 0..3 arrays with nondecreasing maximum of every two consecutive values in every row and column

22500, 1494029, 86208566, 3816838692, 152303295344, 5387348466660, 177938935415798, 5502772243799727, 162662498113307643, 4619253532805480216, 127251482033929987476, 3414828003845101346775, 89735028379445977912644

Offset

1,1

Comments

Column 3 of A251120

Links

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

Example

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

Crossrefs

Sequence in context: A230924 A250441 A204305 * A235415 A235260 A236085

Adjacent sequences: A251113 A251114 A251115 * A251117 A251118 A251119

Keyword

nonn

Author

R. H. Hardin, Nov 30 2014

Status

approved