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A155851 n is prime and is the sum of the first k primes for some k, start from 5. +0
2
5, 23, 53, 233, 563, 1259, 2579, 2909, 12713, 22543, 28099, 31729, 39607, 41017, 42463, 87511, 110359, 115279, 117787, 138863, 141671, 213533, 242243, 257353, 265117, 269069, 289171, 310019, 318557, 327193, 331603, 354097, 372607, 441101 (list; graph; listen)
OFFSET

1,1

COMMENT

Analogous to A013918, A071151. Number '5' is first prime number after first composite number '4'.

MATHEMATICA

s=0; lst={}; Do[p=Prime[n]; s+=p; If[PrimeQ[s], AppendTo[lst, s]], {n, 3, 7!}]; lst

CROSSREFS

Cf. A013918, A071151

Sequence in context: A140811 A090686 A082277 this_sequence A019267 A053664 A092544

Adjacent sequences: A155848 A155849 A155850 this_sequence A155852 A155853 A155854

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 28 2009

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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