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 A155851 n is prime and is the sum of the first k primes for some k, start from 5. 1
 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; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Analogous to A013918, A071151. Number '5' is first prime number after first composite number '4'. LINKS Table of n, a(n) for n=1..34. MATHEMATICA s=0; lst={}; Do[p=Prime[n]; s+=p; If[PrimeQ[s], AppendTo[lst, s]], {n, 3, 7!}]; lst Select[Accumulate[Prime[Range[3, 500]]], PrimeQ] (* Harvey P. Dale, Jun 22 2015 *) CROSSREFS Cf. A013918, A071151 Sequence in context: A090686 A082277 A289154 * A019267 A053664 A186030 Adjacent sequences: A155848 A155849 A155850 * A155852 A155853 A155854 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, Jan 28 2009 STATUS approved

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Last modified February 23 02:18 EST 2024. Contains 370265 sequences. (Running on oeis4.)