A224594 Number of (n+7)X12 0..1 matrices with each 8X8 subblock idempotent

891884, 107496, 99428, 108764, 116744, 122713, 126820, 129646, 131588, 150819, 187014, 236085, 293902, 357451, 424560, 494058, 565037, 654785, 780204, 954187, 1185430, 1479852, 1840901, 2270907, 2771411, 3361205, 4075790, 4963927, 6082850

Offset

1,1

Comments

Column 5 of A224597

Links

R. H. Hardin, Table of n, a(n) for n = 1..63

Formula

Empirical: a(n) = 3*a(n-1) -4*a(n-2) +4*a(n-3) -4*a(n-4) +4*a(n-5) -3*a(n-6) +a(n-7) +2*a(n-8) -5*a(n-9) +6*a(n-10) -6*a(n-11) +6*a(n-12) -6*a(n-13) +4*a(n-14) -a(n-15) -a(n-16) +2*a(n-17) -2*a(n-18) +2*a(n-19) -2*a(n-20) +2*a(n-21) -a(n-22) for n>28

Example

Some solutions for n=3
..1..1..1..1..1..1..1..1..1..0..0..0....1..1..1..1..1..1..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..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
..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..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..0..0..1..0..0..1..1..1..1..1..1....1..1..1..0..1..0..1..1..1..1..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

Crossrefs

Sequence in context: A250571 A092016 A269219 * A105379 A186792 A345607

Adjacent sequences: A224591 A224592 A224593 * A224595 A224596 A224597

Keyword

nonn

Author

R. H. Hardin Apr 11 2013

Status

approved