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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. 1
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; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

EXAMPLE

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

CROSSREFS

Sequence in context: A187809 A092893 A133172 * A073845 A169697 A092525

Adjacent sequences:  A075450 A075451 A075452 * A075454 A075455 A075456

KEYWORD

easy,nonn,frac

AUTHOR

Zak Seidov, Oct 11 2002

EXTENSIONS

Edited by Dean Hickerson, Oct 15 2002

STATUS

approved

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Last modified June 17 05:19 EDT 2019. Contains 324183 sequences. (Running on oeis4.)