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A224585 Number of (n+6)X11 0..1 matrices with each 7X7 subblock idempotent 1
128620, 26542, 26294, 28783, 31062, 32814, 34107, 35087, 40536, 50460, 63767, 79415, 96623, 114896, 133880, 158108, 191982, 238919, 301266, 380584, 477886, 593959, 733990, 907647, 1127983, 1410421, 1771896, 2230456, 2804799, 3518917 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A224588

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..136

FORMULA

Empirical: a(n) = 2*a(n-1) -a(n-2) +a(n-3) -a(n-4) -a(n-5) +a(n-6) +a(n-8) -a(n-9) -a(n-10) +a(n-12) +a(n-14) -a(n-15) for n>21

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

..1..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: A234978 A235318 A151812 * A190819 A190838 A237072

Adjacent sequences:  A224582 A224583 A224584 * A224586 A224587 A224588

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 11 2013

STATUS

approved

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Last modified May 13 02:36 EDT 2021. Contains 343836 sequences. (Running on oeis4.)