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A075453 Numerator of 1/pp(n) + 1/pp(n+1), where pp(n)=A001597(n-1) is the n-th perfect power. +0
2
5, 3, 17, 25, 41, 52, 59, 17, 85, 113, 145, 181, 221, 246, 253, 17, 313, 365, 103, 49, 52, 499, 545, 613, 667, 704, 761, 841, 925, 249, 1041, 1105, 1201, 1301, 1405, 1513, 1625, 1741, 1861, 1961, 253, 2113, 2245, 2381, 2521, 2627, 2700, 2813, 2965, 3121 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(2) = 3 because 1/pp(2) + 1/pp(3) = 1/4 + 1/8 = 3/8.

CROSSREFS

Sequence in context: A105201 A092893 A133172 this_sequence A073845 A092525 A101367

Adjacent sequences: A075450 A075451 A075452 this_sequence A075454 A075455 A075456

KEYWORD

easy,nonn,frac

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Oct 11 2002

EXTENSIONS

Edited by Dean Hickerson (dean(AT)math.ucdavis.edu), Oct 15 2002

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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