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A302722 a(n) is the n-th prime number raised to the n-th nonprime number. 0
2, 81, 15625, 5764801, 2357947691, 137858491849, 582622237229761, 799006685782884121, 266635235464391245607, 250246473680347348787521, 699053619999045038539170241, 23122483666661158276686253786801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..12.

FORMULA

a(n) = A000040(n)^A018252(n).

EXAMPLE

a(3) = 5^6 = 15625 because 5 is the 3rd prime number and 6 is the 3rd nonprime number.

MATHEMATICA

Block[{p = Prime@ Range@ 12, k}, k = Complement[Range@ Max@ p, p]; Array[p[[#]]^k[[#]] &, Length@ p]] (* Michael De Vlieger, Apr 12 2018 *)

PROG

(PARI) lista(nn) = my(k=0); for (n=1, nn, if (!isprime(n), k++; print1(prime(k)^n, ", "))) \\ Michel Marcus, Apr 12 2018

CROSSREFS

Cf. A000040, A018252, A086650, A086701.

Sequence in context: A187858 A072408 A318587 * A123177 A209585 A090603

Adjacent sequences:  A302719 A302720 A302721 * A302723 A302724 A302725

KEYWORD

nonn

AUTHOR

Kritsada Moomuang, Apr 12 2018

STATUS

approved

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Last modified June 24 16:48 EDT 2019. Contains 324325 sequences. (Running on oeis4.)