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Starting with prime(n) go on adding smaller primes until one gets a prime. a(n) = this prime, or 0 if no such prime exists.
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%I #7 Aug 23 2014 15:18:26

%S 0,5,0,17,23,31,41,67,59,71,83,97,109,181,131,281,311,173,439,199,211,

%T 223,373,251,269,449,883,311,1283,719,349,587,617,647,683,439,457,

%U 1483,487,503,839,863,1511,2111,941,1951,607,1747,661,2203,1123,701,1999

%N Starting with prime(n) go on adding smaller primes until one gets a prime. a(n) = this prime, or 0 if no such prime exists.

%C Conjecture: Except a(3) no other term is zero.

%e prime(6) = 13 and 13+11+7 = 31 hence a(6) = 31.

%K nonn

%O 1,2

%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 04 2003

%E Corrected and extended by _David Wasserman_, Jan 27 2005