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Search: id:A016815
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A016815 (4n+1)^3. +0
1
1, 125, 729, 2197, 4913, 9261, 15625, 24389, 35937, 50653, 68921, 91125, 117649, 148877, 185193, 226981, 274625, 328509, 389017, 456533, 531441, 614125, 704969, 804357, 912673, 1030301, 1157625 (list; graph; listen)
OFFSET

0,2

REFERENCES

S. R. Finch, Mathematical Constants, Cambridge, 2003, Section 1.6.3.

FORMULA

Sum_{n>=0} 1/a(n) = pi^3/64 + 7 zeta(3)/16.

CROSSREFS

Sequence in context: A070308 A045170 A060093 this_sequence A088896 A016851 A000526

Adjacent sequences: A016812 A016813 A016814 this_sequence A016816 A016817 A016818

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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


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