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A263893 Number of permutations of [n] containing exactly nine occurrences of the consecutive pattern 132. 2
34459425, 76077066240, 23268095463150, 3502499376844800, 362160710593122645, 29628651314310266880, 2068889029242559281900, 129136429755219072614400, 7428565762326237479436675, 402305799817247440225075200, 20831246409166627215418935750 (list; graph; refs; listen; history; text; internal format)
OFFSET

19,1

LINKS

Alois P. Heinz, Table of n, a(n) for n = 19..100

FORMULA

a(n) = A197365(n,9).

MAPLE

b:= proc(u, o, t) option remember; series(`if`(u+o=0, 1,

      add(b(u-j, o+j-1, 0)*`if`(j<=t, x, 1), j=1..u)+

      add(b(u+j-1, o-j, j-1), j=1..o)), x, 10)

    end:

a:= n-> coeff(b(n, 0$2), x, 9):

seq(a(n), n=19..35);

CROSSREFS

Column k=9 of A197365.

Sequence in context: A271769 A290038 A289957 * A250573 A210154 A216399

Adjacent sequences:  A263890 A263891 A263892 * A263894 A263895 A263896

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Oct 28 2015

STATUS

approved

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Last modified July 29 05:56 EDT 2021. Contains 346340 sequences. (Running on oeis4.)