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A224584 Number of (n+6)X10 0..1 matrices with each 7X7 subblock idempotent 1
122508, 24643, 24293, 26528, 28783, 30456, 31741, 32736, 38059, 47654, 60745, 76148, 93083, 111033, 129756, 153513, 186786, 232806, 294033, 371986, 467644, 581659, 719363, 890061, 1106560, 1384000, 1739159, 2189675, 2754115, 3455903 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A224588

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..159

FORMULA

Empirical: a(n) = 3*a(n-1) -4*a(n-2) +4*a(n-3) -3*a(n-4) +a(n-5) +a(n-6) -2*a(n-7) +2*a(n-8) -2*a(n-9) +a(n-10) -a(n-13) +2*a(n-14) -2*a(n-15) +2*a(n-16) -a(n-17) for n>23

EXAMPLE

Some solutions for n=2

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

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

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

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

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

CROSSREFS

Sequence in context: A185864 A236797 A115545 * A254017 A254024 A254891

Adjacent sequences:  A224581 A224582 A224583 * A224585 A224586 A224587

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 11 2013

STATUS

approved

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Last modified May 14 19:53 EDT 2021. Contains 343903 sequences. (Running on oeis4.)