A224637 Number of (n+6)X(n+6) 0..2 matrices with each 7X7 subblock idempotent

145121216, 1268962, 1800748, 2157776, 2323256, 2397590, 2432656, 2451680, 3552688

Offset

1,1

Comments

Diagonal of A224642

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A207798 A204806 A186174 * A224638 A224642 A185855

Adjacent sequences: A224634 A224635 A224636 * A224638 A224639 A224640

Keyword

nonn

Author

R. H. Hardin Apr 13 2013

Status

approved