A232887 Number of (1+1)X(n+1) 0..3 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..1+1} nondecreasing

83, 527, 2751, 12556, 51716, 196332, 698368, 2354506, 7588856, 23546007, 70707020, 206386734, 587661423, 1637093549, 4472821323, 12010323349, 31751145484, 82765882160, 213010026700, 541875786236, 1363898055174, 3399595078284

Offset

1,1

Comments

Row 1 of A232886

Links

R. H. Hardin, Table of n, a(n) for n = 1..59

Example

Some solutions for n=5
..0..0..1..1..2..0....1..0..2..0..1..1....0..2..0..2..3..3....0..0..1..3..1..1
..0..0..0..1..1..2....1..3..2..3..3..3....1..1..2..1..2..3....0..1..1..1..2..2

Crossrefs

Sequence in context: A142900 A033248 A232886 * A232884 A142289 A164758

Adjacent sequences: A232884 A232885 A232886 * A232888 A232889 A232890

Keyword

nonn

Author

R. H. Hardin, Dec 02 2013

Status

approved