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Search: id:A127650
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A127650 n^n - (2n-1)!!. +0
2
0, 1, 12, 151, 2180, 36261, 688408, 14750191, 352961064, 9345270925, 271562360036, 8599866305031, 294969253011628, 10898548778881141, 431703607027230000, 18254845289747040991, 820907602015573913552, 39124764979819837803549, 1970218861127675697564604 (list; graph; listen)
OFFSET

1,3

COMMENT

Theorem: n^n > (2n-1)!! for n>1.

REFERENCES

D. S. Mitrinovic, Analytic Inequalities, Springer-Verlag, 1970; p. 192, 3.1.15.

CROSSREFS

Cf. A001147, A127688.

Sequence in context: A060917 A113358 A015611 this_sequence A103759 A121195 A004356

Adjacent sequences: A127647 A127648 A127649 this_sequence A127651 A127652 A127653

KEYWORD

nonn

AUTHOR

njas, Apr 03 2007

page 1

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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