A215235 Least number k such that the sum of the 2n+1 consecutive primes starting with prime(k) is prime.

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

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: A358191 A235162 A059527 * A101457 A280753 A076217

Adjacent sequences: A215232 A215233 A215234 * A215236 A215237 A215238

Keyword

nonn

Author

T. D. Noe, Aug 29 2012

Status

approved