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A224595 Number of (n+7)X13 0..1 matrices with each 8X8 subblock idempotent 1
877647, 110868, 105212, 114337, 122713, 128682, 132787, 135622, 137700, 157201, 193783, 243309, 301667, 365687, 433384, 503411, 574992, 665573, 792178, 967802, 1201330, 1498385, 1862641, 2296415, 2801260, 3396151, 4117085, 5013150, 6142255 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A224597
LINKS
FORMULA
Empirical: a(n) = 3*a(n-1) -4*a(n-2) +5*a(n-3) -7*a(n-4) +8*a(n-5) -8*a(n-6) +8*a(n-7) -6*a(n-8) +3*a(n-9) -2*a(n-10) +3*a(n-12) -4*a(n-13) +4*a(n-14) -4*a(n-15) +3*a(n-16) -2*a(n-17) +2*a(n-18) -a(n-19) for n>25
EXAMPLE
Some solutions for n=3
..1..0..0..0..0..0..0..0..0..0..0..0..1
..1..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
..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
..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..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..1
..1..0..0..0..0..0..0..0..0..0..0..0..1
CROSSREFS
Sequence in context: A254421 A254428 A271264 * A254387 A254394 A253982
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 11 2013
STATUS
approved

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Last modified May 19 06:35 EDT 2024. Contains 372666 sequences. (Running on oeis4.)