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A071194
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Length [>1] of shortest sequences of consecutive primes started with p[n] such that sum is also prime.
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6
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2, 9, 3, 3, 3, 5, 3, 3, 3, 3, 3, 9, 3, 5, 7, 3, 5, 3, 3, 3, 5, 3, 3, 7, 7, 3, 7, 5, 3, 5, 5, 9, 5, 3, 3, 5, 3, 3, 11, 9, 5, 21, 5, 9, 3, 9, 3, 5, 55, 3, 7, 27, 9, 27, 7, 5, 5, 3, 9, 3, 3, 3, 5, 3, 7, 7, 11, 3, 3, 3, 5, 5, 7, 7, 3, 5, 3, 9, 3, 3, 5, 11, 3, 5, 47, 5, 3, 3, 5, 3, 3, 5, 7, 3, 3, 7, 3, 5, 5, 5, 3
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| n=1:start-prime=p(1)=2, 2+3=5 is prime, length=2, so a(2)=2; n=2:start-prime=p(2)=3, 3+5+7+11+13+17+19+23+29=127 is prime, length=9,all shorter partial sums are composite so a(2)=9; n=160,p(160)=941, 941+...+1609=121123 is prime, a(160)=95.
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CROSSREFS
| Cf. A071195-A071198.
Sequence in context: A011240 A021345 A011066 * A137616 A154581 A111689
Adjacent sequences: A071191 A071192 A071193 * A071195 A071196 A071197
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), May 16 2002
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