A224632 Number of (n+5)X9 0..2 matrices with each 6X6 subblock idempotent

338635, 187090, 225179, 245916, 256100, 261192, 264100, 326973, 430055, 553586, 686661, 824129, 963797, 1165618, 1469816, 1896847, 2456254, 3152394, 3987498, 5023727, 6363433, 8129436, 10454151

Offset

1,1

Comments

Column 4 of A224636

Links

Table of n, a(n) for n=1..23.

Example

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

Crossrefs

Sequence in context: A022225 A114674 A185475 * A350186 A234726 A132660

Adjacent sequences: A224629 A224630 A224631 * A224633 A224634 A224635

Keyword

nonn

Author

R. H. Hardin Apr 12 2013

Status

approved