A224640 Number of (n+6)X9 0..2 matrices with each 7X7 subblock idempotent

6162817, 1477939, 1800748, 1978918, 2061018, 2097855, 2114887, 2124211, 2665911, 3563511

Offset

1,1

Comments

Column 3 of A224642

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A254585 A254592 A254360 * A185887 A306872 A186838

Adjacent sequences: A224637 A224638 A224639 * A224641 A224642 A224643

Keyword

nonn

Author

R. H. Hardin Apr 13 2013

Status

approved