A232525 Number of (n+1)X(3+1) 0..3 arrays x(i,j) with every row sum{j*x(i,j), j=1..3+1} equal, and every column sum{i*x(i,j), i=1..n+1} equal, with top left element <= 1

2, 19, 223, 619, 523, 16285, 141433, 2231968, 20520962, 138309075, 1507636982, 428685674

Offset

1,1

Comments

Column 3 of A232526

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Sequence in context: A349256 A091852 A210986 * A024227 A106945 A211886

Adjacent sequences: A232522 A232523 A232524 * A232526 A232527 A232528

Keyword

nonn

Author

R. H. Hardin, Nov 25 2013

Status

approved