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A070281 Smallest prime which is the sum of n consecutive primes, or 0 if no such prime exists. 3
2, 5, 23, 17, 53, 41, 197, 0, 127, 0, 233, 197, 691, 281, 379, 0, 499, 0, 857, 0, 953, 0, 1151, 0, 1259, 0, 1583, 0, 2099, 0, 2399, 0, 2417, 0, 2579, 0, 2909, 0, 3803, 0, 3821, 0, 4217, 0, 4651, 0, 5107, 0, 5813, 0, 6829, 0, 6079, 0, 6599, 0, 14153, 0, 10091, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Sequence A013918 lists the nonzero numbers occurring at even n.
LINKS
MATHEMATICA
f[n_] := Block[{k = 1, s}, If[Mod[n, 2] == 0, s = Sum[Prime[i], {i, k, k + n - 1}]; If[PrimeQ[s], s, 0], While[s = Sum[Prime[i], {i, k, k + n - 1}] ; ! PrimeQ[s], k++ ]; s]]; Table[f[n], {n, 65}] (* Ray Chandler, Sep 27 2006 *)
CROSSREFS
Cf. A070934.
Sequence in context: A078419 A241428 A342386 * A355025 A198444 A019368
KEYWORD
nonn
AUTHOR
Amarnath Murthy, May 07 2002
EXTENSIONS
Corrected and extended by Jim Nastos, Jun 15 2002
Extended by Ray Chandler, Sep 27 2006
a(60) corrected by Giovanni Resta, May 31 2017
STATUS
approved

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)