A171240 - OEIS

A171240

a(n) = n^d+d^n where d = A013632(n) is the distance to the next prime.

2, 3, 17, 5, 57, 7, 18785, 7073, 593, 11, 2169, 13, 67137425, 4785713, 32993, 17, 131361, 19, 274878037265, 3486792401, 2097593, 23, 789730223201638705, 59604644783353249, 1125899907233249, 2541865845905, 134218457, 29, 536871753, 31

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

MATHEMATICA

dnp[n_]:=Module[{d=NextPrime[n]-n}, n^d+d^n]; Array[dnp, 20](* Harvey P. Dale, Jun 23 2017 *)

CROSSREFS

Cf. A013632, A013236, A171228.

Sequence in context: A140383 A029913 A073125 * A078201 A361104 A090913

Adjacent sequences: A171237 A171238 A171239 * A171241 A171242 A171243

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Dec 05 2009

EXTENSIONS

Definition and some values corrected - R. J. Mathar, Jun 04 2010

More terms from Harvey P. Dale, Jun 23 2017

STATUS

approved