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A096902 Numbers n such that 3*prime(n) + 2*prime(n+1) is prime. 1
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20, 24, 26, 27, 30, 31, 37, 38, 40, 46, 48, 50, 55, 56, 58, 60, 62, 63, 64, 66, 67, 70, 71, 72, 73, 74, 78, 81, 85, 88, 89, 92, 95, 98, 102, 109, 113, 114, 116, 120, 121, 122, 130, 133, 134, 135, 136, 140, 144, 147, 148, 152 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

a(3)=4 since 3*prime(4)+2*prime(5) = 3*7 + 2*11 = 43 is prime.

CROSSREFS

Cf. A096218 for resulting primes.

Sequence in context: A008730 A033064 A130225 * A117325 A180643 A017905

Adjacent sequences:  A096899 A096900 A096901 * A096903 A096904 A096905

KEYWORD

nonn

AUTHOR

Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 31 2004

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Last modified February 16 14:07 EST 2012. Contains 205930 sequences.