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A224575 Number of (n+5) X 11 0..1 matrices with each 6 X 6 subblock idempotent. 1
25769, 7386, 7884, 8714, 9480, 10086, 10561, 12373, 15413, 19404, 24072, 29230, 34734, 41919, 52000, 65945, 84434, 107959, 136853, 172795, 218668, 278353, 356397, 457838, 588032, 754025, 965735, 1236991, 1586155, 2036626, 2617144, 3363506 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A224577.

LINKS

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

FORMULA

Empirical: a(n) = 3*a(n-1) -3*a(n-2) +a(n-3) +2*a(n-6) -5*a(n-7) +4*a(n-8) -a(n-9) -a(n-12) +2*a(n-13) -a(n-14), for n>18.

EXAMPLE

Some solutions for n=2:

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

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

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

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

CROSSREFS

Sequence in context: A115535 A109252 A142708 * A237962 A237744 A003927

Adjacent sequences:  A224572 A224573 A224574 * A224576 A224577 A224578

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 10 2013

STATUS

approved

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Last modified June 20 06:56 EDT 2021. Contains 345157 sequences. (Running on oeis4.)