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A233310 Number of (n+1) X (2+1) 0..4 arrays with row and column sums nondecreasing, and no adjacent elements equal. 1
463, 7248, 93533, 1112270, 11993847, 121586107, 1175160522, 10931803610, 98615414329, 867629867875, 7476381286384, 63304064209964, 528096508009910, 4349593195338761, 35429535818800767, 285811978442860864 (list; graph; refs; listen; history; text; internal format)
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 A050424

Adjacent sequences:  A233307 A233308 A233309 * A233311 A233312 A233313

KEYWORD

nonn,changed

AUTHOR

R. H. Hardin, Dec 07 2013

STATUS

approved

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Last modified May 9 10:39 EDT 2021. Contains 343732 sequences. (Running on oeis4.)