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A121248 Numbers n such that the sum of the first 2^n primes is a prime. 1
0, 1, 2, 6, 9, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Corresponding primes in the sums of the first 2^n primes or primes in A099825[n] are given in A113617[n] = {2,5,17,8893,868151,3875933,219554912086470964379,...}.
LINKS
MATHEMATICA
Do[f=Sum[Prime[k], {k, 1, 2^n}]; If[PrimeQ[f], Print[{n, f}]], {n, 0, 32}]
CROSSREFS
Sequence in context: A198230 A263495 A282079 * A268677 A108370 A325706
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Aug 22 2006
EXTENSIONS
Edited by Robert G. Wilson v, Aug 26 2006
STATUS
approved

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Last modified May 23 07:28 EDT 2024. Contains 372760 sequences. (Running on oeis4.)