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Search: id:A053488
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A053488 E.g.f.: exp(exp(sinh(x))-1)-1. +0
1
0, 1, 2, 6, 23, 103, 535, 3153, 20676, 149148, 1172343, 9960085, 90864801, 885278605, 9167936406, 100508961982, 1162366436355, 14136151459043, 180287711599455, 2405321659729837, 33495442060505752, 485880832780748932 (list; graph; listen)
OFFSET

0,3

REFERENCES

R. P. Stanley, Enumerative Combinatorics, Cambridge, Vol. 2, 1999; see Example 5.1.14.

CROSSREFS

Sequence in context: A022558 A005802 A061552 this_sequence A117106 A137534 A137535

Adjacent sequences: A053485 A053486 A053487 this_sequence A053489 A053490 A053491

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jan 15 2000

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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