A085105 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.

0, 5, 0, 17, 23, 31, 41, 67, 59, 71, 83, 97, 109, 181, 131, 281, 311, 173, 439, 199, 211, 223, 373, 251, 269, 449, 883, 311, 1283, 719, 349, 587, 617, 647, 683, 439, 457, 1483, 487, 503, 839, 863, 1511, 2111, 941, 1951, 607, 1747, 661, 2203, 1123, 701, 1999

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..53.

Example

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

Crossrefs

Sequence in context: A226372 A367191 A093782 * A368061 A094031 A022902

Adjacent sequences: A085102 A085103 A085104 * A085106 A085107 A085108

Keyword

nonn

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 04 2003

Extensions

Corrected and extended by David Wasserman, Jan 27 2005

Status

approved