A229420 Number of 6X6 0..n zero-diagonal arrays with corresponding row and column sums equal

1375952, 23938685973, 28256240134144, 7093199984236625, 657759228191876016, 30505804179367041217, 850029945152225681408

Offset

1,1

Comments

Row 6 of A229417

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A114657 A250058 A205205 * A249882 A252446 A288073

Adjacent sequences: A229417 A229418 A229419 * A229421 A229422 A229423

Keyword

nonn

Author

R. H. Hardin Sep 22 2013

Status

approved