A224639 Number of (n+6)X8 0..2 matrices with each 7X7 subblock idempotent

10906923, 1268962, 1477939, 1642077, 1727928, 1767017, 1778834, 1780319, 2325778, 3228402, 4296196, 5442583, 6641962, 7853412, 9058338, 10803639, 13455199, 17176864, 22043261, 28095893, 35365711, 43848040

Offset

1,1

Comments

Column 2 of A224642

Links

Table of n, a(n) for n=1..22.

Example

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

Crossrefs

Sequence in context: A205464 A374779 A202470 * A298704 A308079 A114680

Adjacent sequences: A224636 A224637 A224638 * A224640 A224641 A224642

Keyword

nonn

Author

R. H. Hardin Apr 13 2013

Status

approved