A224629 Number of (n+5)X6 0..2 matrices with each 6X6 subblock idempotent

2236302, 396769, 311767, 338635, 396573, 443744, 449369, 544003, 692711, 980320, 1411379, 2030529, 2793530, 3794286, 5011337, 6643245, 8896802, 12138019, 16712716, 23206612, 32113928, 44254185, 60652523, 82906840, 113205446

Offset

1,1

Comments

Column 1 of A224636

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Formula

Empirical: a(n) = 2*a(n-1) -2*a(n-2) +2*a(n-3) -a(n-4) +2*a(n-6) -3*a(n-7) +4*a(n-8) -4*a(n-9) +3*a(n-10) -2*a(n-11) -2*a(n-14) +2*a(n-15) -2*a(n-16) +2*a(n-17) -a(n-18) +a(n-19) for n>30

Example

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

Crossrefs

Sequence in context: A203275 A034608 A224628 * A224636 A046444 A349722

Adjacent sequences: A224626 A224627 A224628 * A224630 A224631 A224632

Keyword

nonn

Author

R. H. Hardin Apr 12 2013

Status

approved