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A215235 Least number k such that the sum of the 2n+1 consecutive primes starting with prime(k) is prime. 3
1, 3, 3, 7, 2, 3, 10, 2, 2, 5, 4, 4, 3, 4, 6, 6, 4, 3, 3, 6, 4, 4, 4, 4, 5, 7, 2, 2, 25, 10, 2, 6, 2, 8, 8, 2, 3, 2, 9, 4, 5, 16, 11, 24, 16, 8, 5, 2, 7, 9, 23, 5, 3, 15, 12, 3, 7, 2, 2, 10, 9, 3, 3, 3, 17, 4, 4, 11, 2, 19, 2, 2, 24, 20, 11, 13, 10, 2, 7, 5, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

The sums are in A070934. The initial primes are in A089793.

LINKS

T. D. Noe, Table of n, a(n) for n = 0..10000

CROSSREFS

Cf. A070934, A089793.

Sequence in context: A338775 A235162 A059527 * A101457 A280753 A076217

Adjacent sequences:  A215232 A215233 A215234 * A215236 A215237 A215238

KEYWORD

nonn

AUTHOR

T. D. Noe, Aug 29 2012

STATUS

approved

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Last modified August 11 20:13 EDT 2022. Contains 356067 sequences. (Running on oeis4.)