A075453 Numerator of 1/pp(n) + 1/pp(n+1), where pp(n) = A001597(n-1) is the n-th perfect power.

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

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

Cf. A001597.

Sequence in context: A092893 A133172 A363686 * A349118 A073845 A169697

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