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Search: id:A111586
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A111586 G.f.: -x*(1+x+x^2+2*x^3+3*x^4+3*x^5+x^6-x^7-x^9)/((1+x)*(-1+2*x+x^3)). +0
1
0, 1, 2, 5, 12, 28, 62, 136, 299, 661, 1456, 3213, 7085, 15628, 34467, 76021, 167668, 369805, 815629, 1798928, 3967659, 8750949, 19300824, 42569309, 93889565, 207079956, 456729219, 1007348005, 2221775964, 4900281149, 10807910301, 23837596568, 52575474283, 115958858869 (list; graph; listen)
OFFSET

0,3

REFERENCES

V. Vatter, The Enumeration and Structure of Permutation Classes, Ph. D. Dissertation, Rutgers Univ., Math. Dept., 2006.

LINKS

Index entries for sequences related to linear recurrences with constant coefficients

CROSSREFS

Sequence in context: A018010 A026710 A118898 this_sequence A006979 A019301 A006980

Adjacent sequences: A111583 A111584 A111585 this_sequence A111587 A111588 A111589

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Nov 17 2005

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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