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A063757 G.f.: (1+3*x+2*x^2)/((1-x)*(1-2*x^2)). +0
1
1, 4, 8, 14, 22, 34, 50, 74, 106, 154, 218, 314, 442, 634, 890, 1274, 1786, 2554, 3578, 5114, 7162, 10234, 14330, 20474, 28666, 40954, 57338, 81914, 114682, 163834, 229370, 327674, 458746, 655354, 917498, 1310714, 1835002, 2621434 (list; graph; listen)
OFFSET

0,2

REFERENCES

P. de la Harpe, Topics in Geometric Group Theory, Univ. Chicago Press, 2000, p. 158.

LINKS

Index entries for sequences related to linear recurrences with constant coefficients

CROSSREFS

Sequence in context: A011897 A110895 A049628 this_sequence A079328 A073612 A060064

Adjacent sequences: A063754 A063755 A063756 this_sequence A063758 A063759 A063760

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Aug 14 2001

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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