OFFSET
1,2
COMMENTS
Corresponding primes that are equal to the sum of the first a(n)^2 primes are listed in A122207(n) = {2, 17, 8893, 24133, 768373, 1583293, 2180741, 3875933, 6426919, 173472547, 289093219, 741938801, 2738357903, 2895147163, 3058653607, ...}. - Robert G. Wilson v, Sep 29 2006
LINKS
Ray Chandler, Table of n, a(n) for n = 1..1000
FORMULA
MATHEMATICA
s = 0; t = {}; Do[s = s + Sum[Prime@k, {k, (n - 1)^2 + 1, n^2}]; If[PrimeQ@s, AppendTo[t, n]], {n, 1341}]; t (* Robert G. Wilson v *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Aug 25 2006
EXTENSIONS
More terms from Robert G. Wilson v, Sep 29 2006
STATUS
approved