A250514 Number of (n+1)X(3+1) 0..3 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction

5996, 205022, 5941982, 166583429, 4464289109, 117638074883, 3049397341176, 78567969110807, 2012530652434693, 51449294606804041, 1312608270113245482, 33467783101961305752, 852737313739021895504, 21723358340006118530026

Offset

1,1

Comments

Column 3 of A250519

Links

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

R. H. Hardin, Empirical recurrence of order 50

Formula

Empirical recurrence of order 50 (see link above)

Example

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

Crossrefs

Sequence in context: A046903 A171351 A068132 * A343432 A115429 A046395

Adjacent sequences: A250511 A250512 A250513 * A250515 A250516 A250517

Keyword

nonn

Author

R. H. Hardin, Nov 24 2014

Status

approved