A224570 Number of (n+5)X6 0..1 matrices with each 6X6 subblock idempotent

96608, 18044, 16696, 18868, 22096, 25769, 28708, 33705, 40120, 50747, 67088, 91787, 125249, 171289, 230543, 308919, 413997, 558937, 759651, 1041635, 1432497, 1971637, 2708903, 3714751, 5085273, 6961121, 9533251, 13070447, 17936977

Offset

1,1

Comments

Column 1 of A224577

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

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..1..0..1....1..0..0..0..0..0....0..0..0..0..0..0....1..1..1..0..1..0
..0..0..0..0..0..0....0..0..1..1..1..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..1..1..0..1..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..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..1..1..1..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....0..0..1..1..1..0....1..0..0..0..0..1....0..0..0..0..1..1

Crossrefs

Sequence in context: A205351 A343282 A224569 * A224577 A235299 A186013

Adjacent sequences: A224567 A224568 A224569 * A224571 A224572 A224573

Keyword

nonn

Author

R. H. Hardin Apr 10 2013

Status

approved