A251040 Number of (3+1)X(n+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

3550, 45150, 422538, 3433899, 24844850, 165531421, 1034381160, 6148260175, 35111881064, 194099698524, 1044559279312, 5496321654142, 28374757599514, 144110355157973, 721631870905078, 3569209613096896, 17462525175317094

Offset

1,1

Comments

Row 3 of A251037

Links

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

R. H. Hardin, Empirical recurrence of order 60

Formula

Empirical recurrence of order 60 (see link above)

Example

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

Crossrefs

Sequence in context: A252989 A253309 A253657 * A253727 A218815 A248855

Adjacent sequences: A251037 A251038 A251039 * A251041 A251042 A251043

Keyword

nonn

Author

R. H. Hardin, Nov 29 2014

Status

approved