A224617 Number of (n+4)X(n+4) 0..2 matrices with each 5X5 subblock idempotent

54182, 15354, 24024, 29254, 32204, 34032, 50748, 77986, 111302, 148228, 187624, 246190, 335440, 462208, 630792, 844338, 1124602, 1505884, 2030116, 2744262, 3699158, 4970136, 6670642, 8960714, 12052800, 16216412, 21805522, 29300694

Offset

1,1

Comments

Diagonal of A224625

Links

R. H. Hardin, Table of n, a(n) for n = 1..29

Example

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

Crossrefs

Sequence in context: A243362 A224624 A202467 * A224625 A224618 A254263

Adjacent sequences: A224614 A224615 A224616 * A224618 A224619 A224620

Keyword

nonn

Author

R. H. Hardin Apr 12 2013

Status

approved