A195421 Smallest lower twin prime number which sums with its upper twin prime to a perfect n-th power.

3, 17, 3, 253124999, 4076863487, 578415690713087, 139967, 14097567309074239886172287, 73099303486215558911, 8954942912818222989311, 213770812332484473348458269897727733773465812991, 578415690713087, 66266428660760838427050496741110705203446361497484562431

Offset: 1

Author

Kausthub Gudipati, Sep 18 2011

Keywords

• nonn

Crossrefs

Cf. A001359

Formula

a(n) = A195336(n)^n/2-1. - R. J. Mathar, Sep 20 2011