A251032 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 absolute value of x(i,j)-x(i-1,j) in the j direction

4050, 45560, 422538, 3396593, 25346175, 179902335, 1238480366, 8354406377, 55641391371, 367591666672, 2416936370291, 15850140474874, 103825482991322, 679947967183727, 4454444283100317, 29200642258872509, 191573834606253212

Offset

1,1

Comments

Column 3 of A251037

Links

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

R. H. Hardin, Empirical recurrence of order 59

Formula

Empirical recurrence of order 59 (see link above)

Example

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

Crossrefs

Sequence in context: A202313 A001382 A090058 * A035782 A108006 A320207

Adjacent sequences: A251029 A251030 A251031 * A251033 A251034 A251035

Keyword

nonn

Author

R. H. Hardin, Nov 29 2014

Status

approved