A233310 Number of (n+1) X (2+1) 0..4 arrays with row and column sums nondecreasing, and no adjacent elements equal.

463, 7248, 93533, 1112270, 11993847, 121586107, 1175160522, 10931803610, 98615414329, 867629867875, 7476381286384, 63304064209964, 528096508009910, 4349593195338761, 35429535818800767, 285811978442860864

Offset

1,1

Comments

Column 2 of A233311.

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

Some solutions for n=3
..0..1..2....3..1..2....1..0..2....3..1..2....2..0..3....0..4..1....2..0..1
..2..3..0....0..4..3....3..2..3....2..3..1....4..3..0....3..0..2....0..3..2
..0..2..3....4..0..4....1..3..4....0..4..2....2..1..4....2..1..3....3..0..4
..2..1..4....2..4..3....2..4..3....3..0..4....0..4..3....1..3..4....0..4..3

Crossrefs

Cf. A233311.

Sequence in context: A270760 A293025 A108834 * A220716 A189830 A111697

Adjacent sequences: A233307 A233308 A233309 * A233311 A233312 A233313

Keyword

nonn

Author

R. H. Hardin, Dec 07 2013

Status

approved