A232524 Number of (n+1)X(2+1) 0..3 arrays x(i,j) with every row sum{j*x(i,j), j=1..2+1} equal, and every column sum{i*x(i,j), i=1..n+1} equal, with top left element <= 1

4, 16, 19, 50, 124, 575, 3144, 4295, 6598, 187278, 794064, 352184, 3216594, 72624593, 302124719, 211890512, 873813773, 37925335274, 205775541009, 64287205753, 114754329270, 28290860713744, 148492292915657, 9028872587264

Offset

1,1

Comments

Column 2 of A232526

Links

R. H. Hardin, Table of n, a(n) for n = 1..29

Example

Some solutions for n=7
..1..3..1....0..3..1....0..3..2....0..1..2....1..1..2....0..0..3....0..3..0
..3..2..1....0..3..1....3..0..3....2..3..0....0..0..3....0..0..3....2..2..0
..1..3..1....3..0..2....1..1..3....3..1..1....3..3..0....1..1..2....2..2..0
..2..1..2....0..0..3....3..0..3....3..1..1....0..0..3....2..2..1....2..2..0
..3..2..1....0..0..3....0..3..2....3..1..1....1..1..2....3..3..0....0..3..0
..2..1..2....0..0..3....1..1..3....0..1..2....3..3..0....2..2..1....3..0..1
..1..0..3....3..3..0....3..3..1....0..1..2....3..3..0....0..0..3....0..0..2
..1..3..1....3..3..0....3..3..1....1..2..1....0..0..3....2..2..1....0..0..2

Crossrefs

Sequence in context: A373321 A175527 A146510 * A032827 A328465 A280844

Adjacent sequences: A232521 A232522 A232523 * A232525 A232526 A232527

Keyword

nonn

Author

R. H. Hardin, Nov 25 2013

Status

approved