A232775 - OEIS

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A232775

Number of (n+1)X(1+1) 0..2 arrays x(i,j) with row sums sum{j*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing

30, 118, 387, 1175, 3294, 8679, 21991, 53823, 127874, 298046, 682459, 1538297, 3431277, 7577602, 16580065, 36051756, 77908855, 167365984, 358088629, 762995256, 1619108191, 3426195330, 7228924583, 15206904198, 31924025361

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 1 of A232778

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..34

EXAMPLE

Some solutions for n=5

..0..0....0..2....2..0....0..1....0..1....0..0....1..0....1..0....0..0....0..1

..1..1....1..2....2..0....0..1....2..0....0..0....0..1....1..0....0..0....2..0

..2..1....1..2....0..2....2..0....0..1....0..2....2..0....1..1....0..1....0..1

..0..2....1..2....0..2....0..1....2..1....0..2....1..1....1..2....0..1....1..1

..2..1....1..2....0..2....0..1....1..2....2..1....1..2....1..2....0..2....1..1

..0..2....2..2....2..1....1..2....2..2....1..2....1..2....1..2....2..2....2..2

CROSSREFS

Sequence in context: A010018 A256649 A232778 * A246766 A112955 A244636

Adjacent sequences: A232772 A232773 A232774 * A232776 A232777 A232778

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 30 2013

STATUS

approved