A202578 Number of nX4 0..3 arrays with the row and column sums nondecreasing

35, 3731, 343827, 27871870, 2028764764, 136314892664, 8588877039627, 514476145001172, 29560380249736398, 1641734416399853343, 88610102980549306316, 4669544383368346855645, 241085915996896361714538

Offset

1,1

Comments

Column 4 of A202581

Links

Table of n, a(n) for n=1..13.

Example

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

Crossrefs

Sequence in context: A184124 A343586 A201725 * A213404 A249887 A210314

Adjacent sequences: A202575 A202576 A202577 * A202579 A202580 A202581

Keyword

nonn

Author

R. H. Hardin Dec 21 2011

Status

approved