A115049 - OEIS

A115049

Numbers k such that starting with k-th prime, seven groups of three consecutive primes have prime totals.

4, 390, 393, 1724351, 2070298, 2155328, 3378096, 5333892, 5333895, 8520677, 11310117, 11436145, 13085496, 17272880, 25418046, 28636345, 33138545, 36896575, 37744498, 38493207, 45342669, 46960863, 59843398, 63107018

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OFFSET

1,1

COMMENTS

Or, seven chunks of three consecutive primes with prime total.

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

k = 4 is a term because totals of seven groups of three consecutive primes p(4)+p(5)+p(6),...,p(22)+p(23)+p(24) equal to 31,59,97,131,173,211,251 are all prime.

CROSSREFS

Sequence in context: A181044 A339449 A116031 * A307929 A202172 A349460

Adjacent sequences: A115046 A115047 A115048 * A115050 A115051 A115052

KEYWORD

nonn

AUTHOR

Zak Seidov, Feb 28 2006

EXTENSIONS

Corrected and extended by Don Reble, Nov 22 2006

STATUS

approved