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]^(i-1), {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)^(i-1)); if (isprime(v), print1(v, ", "); ); ); } \\ Michel Marcus, Jun 02 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Ctibor O. Zizka, Feb 15 2008
EXTENSIONS
Corrected and extended by Michel Marcus, Jun 02 2013
STATUS
approved