A251033 Number of (n+1)X(4+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

21720, 308423, 3433899, 32439684, 279055227, 2247957615, 17355955112, 130154155397, 957718964643, 6961339210825, 50231364173275, 361033974954169, 2590903481902197, 18593763503880057, 133579469806293855

Offset

1,1

Comments

Column 4 of A251037

Links

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

Example

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

Crossrefs

Sequence in context: A235219 A232121 A232419 * A318167 A327635 A274807

Adjacent sequences: A251030 A251031 A251032 * A251034 A251035 A251036

Keyword

nonn

Author

R. H. Hardin, Nov 29 2014

Status

approved