




OFFSET

1,1


COMMENTS

Prime a(5), if it exists, appears later than A135485(1500).  G. C. Greubel, May 30 2020


LINKS

Jinyuan Wang, Table of n, a(n) for n = 1..4


MATHEMATICA

A135485:= Table[Sum[Prime[i]^(i1), {i, n}], {n, 100}];
Select[A135485, PrimeQ] (* G. C. Greubel, May 30 2020 *)


PROG

(PARI) lista(nn) = {for (n=1, nn, v = sum(i=1, n, prime(i)^(i1)); if (isprime(v), print1(v, ", "); ); ); } \\ Michel Marcus, Jun 02 2013


CROSSREFS

Cf. A135485.
Sequence in context: A028459 A199369 A127425 * A262715 A274545 A296176
Adjacent sequences: A135250 A135251 A135252 * A135254 A135255 A135256


KEYWORD

nonn


AUTHOR

Ctibor O. Zizka, Feb 15 2008


EXTENSIONS

Corrected and extended by Michel Marcus, Jun 02 2013


STATUS

approved



