A224630 Number of (n+5)X7 0..2 matrices with each 6X6 subblock idempotent

396769, 134036, 166962, 187090, 197423, 201378, 204289, 266279, 367311, 489443, 621291, 756082, 894557, 1094178, 1393566, 1815237, 2368477, 3055411, 3880868, 4905067, 6228094, 7972961, 10270056, 13252964, 17062095, 21894549, 28048752

Offset

1,1

Comments

Column 2 of A224636

Links

Table of n, a(n) for n=1..27.

Example

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

Crossrefs

Sequence in context: A234909 A224633 A050434 * A251341 A234331 A250925

Adjacent sequences: A224627 A224628 A224629 * A224631 A224632 A224633

Keyword

nonn

Author

R. H. Hardin Apr 12 2013

Status

approved