A155852 n is prime and is the sum of the first k primes for some k in A071151.

3, 509, 146749, 26444543, 187206119, 735187721, 1662266153, 2146936021, 2844048943, 4335869143, 5539721989, 5990371801, 6145377247, 6788645863, 10092092897, 19122368737, 20186509381, 25745240897, 32732349829

Offset

1,1

Comments

3+127+379=509 (prime), ...

Links

Table of n, a(n) for n=1..19.

Mathematica

s1=s2=0; lst={}; Do[p=Prime[n]; s1+=p; If[PrimeQ[s1], s2+=s1; If[PrimeQ[s2], AppendTo[lst, s2]]], {n, 2, 8!}]; lst

Crossrefs

Cf. A013918, A071151, A155851

Sequence in context: A334304 A255017 A160362 * A003392 A133026 A100339

Adjacent sequences: A155849 A155850 A155851 * A155853 A155854 A155855

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Jan 29 2009

Status

approved