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Search: id:A006634
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A006634 From generalized Catalan numbers.
(Formerly M4648)
+0
1
1, 9, 72, 570, 4554, 36855, 302064, 2504304, 20974005, 177232627, 1509395976, 12943656180, 111676661460, 968786892675, 8445123522144, 73940567860896, 649942898236596 (list; graph; listen)
OFFSET

0,2

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

H. M. Finucan, Some decompositions of generalized Catalan numbers, pp. 275-293 of Combinatorial Mathematics IX. Proc. Ninth Australian Conference (Brisbane, August 1981). Ed. E. J. Billington, S. Oates-Williams and A. P. Street. Lecture Notes Math., 952. Springer-Verlag, 1982.

CROSSREFS

Sequence in context: A084327 A057085 A076765 this_sequence A129328 A003951 A033135

Adjacent sequences: A006631 A006632 A006633 this_sequence A006635 A006636 A006637

KEYWORD

nonn

AUTHOR

Simon Plouffe (simon.plouffe(AT)gmail.com)

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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