A114850 (n-th semiprime)^(n-th semiprime).

256, 46656, 387420489, 10000000000, 11112006825558016, 437893890380859375, 5842587018385982521381124421, 341427877364219557396646723584, 88817841970012523233890533447265625

Offset: 1

Author

Jonathan Vos Post, Feb 20 2006

Keywords

• easy
• nonn

Comments

Semiprime analog of A051674. This is also a subset of A113877 "semiprimes to semiprime powers."

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..121

Crossrefs

Cf. A001358, A051674, A113877.

Programs

Mathematica

#^#&/@Select[Range[30],PrimeOmega[#]==2&] (* Harvey P. Dale, Nov 07 2016 *)

Formula

a(n) = A001358(n)^A001358(n).

Extensions

Corrected by Don Reble, Nov 22 2006