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
Keywords
Crossrefs
Cf. A001359
Formula
a(n) = A195336(n)^n/2-1. - R. J. Mathar, Sep 20 2011