A250672 Number of (n+1)X(4+1) 0..3 arrays with nondecreasing 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

22119, 329226, 4008211, 41503790, 379890972, 3135539502, 23739860017, 167047195040, 1103768366168, 6905919873166, 41196085958108, 235655369716800, 1298966090014725, 6928230529332792, 35884432642746405, 181050004787559210

Offset

1,1

Comments

Column 4 of A250676

Links

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

R. H. Hardin, Empirical recurrence of order 47

Formula

Empirical recurrence of order 47 (see link above)

Example

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

Crossrefs

Sequence in context: A091459 A224574 A232861 * A062564 A043590 A043815

Adjacent sequences: A250669 A250670 A250671 * A250673 A250674 A250675

Keyword

nonn

Author

R. H. Hardin, Nov 26 2014

Status

approved