A232651 Number of (n+2)X(5+2) 0..1 arrays x(i,j) with every row sum{j*x(i,j), j=1..5+2} equal, and every column sum{i*x(i,j), i=1..n+2} equal, with upper left element zero

5, 5, 1, 1, 186, 557, 1, 1, 31989, 139905, 19105, 27769, 14704013, 73506613, 1, 1

Offset

1,1

Comments

Column 5 of A232654

Links

Table of n, a(n) for n=1..16.

Example

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

Crossrefs

Sequence in context: A373434 A174119 A156696 * A145227 A236555 A282969

Adjacent sequences: A232648 A232649 A232650 * A232652 A232653 A232654

Keyword

nonn

Author

R. H. Hardin, Nov 27 2013

Status

approved