A267993 Number of 4Xn arrays containing n copies of 0..4-1 with row sums and column sums nondecreasing.

1, 189, 7477, 425488, 20924732, 1102544770, 53379559302, 2649768641528

Offset

1,2

Comments

Row 4 of A267990.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A267990.

Sequence in context: A211819 A266135 A133351 * A286791 A076012 A092136

Adjacent sequences: A267990 A267991 A267992 * A267994 A267995 A267996

Keyword

nonn

Author

R. H. Hardin, Jan 23 2016

Status

approved