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A224582 Number of (n+6)X8 0..1 matrices with each 7X7 subblock idempotent 1
164935, 26918, 22928, 24643, 26542, 27611, 28629, 29006, 34239, 43678, 55912, 70122, 87081, 104589, 122291, 144899, 177217, 221460, 280369, 355102, 447725, 558187, 690822, 854927, 1064482, 1332274, 1674432, 2108903, 2654002, 3331481 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A224588

LINKS

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

FORMULA

Empirical: a(n) = 3*a(n-1) -5*a(n-2) +7*a(n-3) -9*a(n-4) +11*a(n-5) -12*a(n-6) +13*a(n-7) -13*a(n-8) +12*a(n-9) -10*a(n-10) +7*a(n-11) -4*a(n-12) +3*a(n-14) -6*a(n-15) +8*a(n-16) -10*a(n-17) +11*a(n-18) -11*a(n-19) +11*a(n-20) -10*a(n-21) +9*a(n-22) -7*a(n-23) +6*a(n-24) -5*a(n-25) +4*a(n-26) -3*a(n-27) +2*a(n-28) -a(n-29) for n>39

EXAMPLE

Some solutions for n=2

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

CROSSREFS

Sequence in context: A233705 A233706 A233701 * A327942 A201051 A233425

Adjacent sequences:  A224579 A224580 A224581 * A224583 A224584 A224585

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 11 2013

STATUS

approved

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Last modified May 11 13:41 EDT 2021. Contains 343791 sequences. (Running on oeis4.)