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A086506 a(1) = 2, a(2n) = smallest prime of the type r*a(2n-1) +1, a(2n+1) = smallest prime of the type s*a(2n) -1. 0
2, 3, 5, 11, 43, 173, 691, 6911, 69109, 1658617, 3317233, 19903399, 39806797, 238840783, 4299134093, 25794804559, 464306482061, 8357516677099, 100290200125187, 2607545203254863, 73011265691136163, 292045062764544653 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A113734 A188142 A003686 * A109462 A000905 A065296

Adjacent sequences:  A086503 A086504 A086505 * A086507 A086508 A086509

KEYWORD

nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 29 2003

EXTENSIONS

More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Mar 09 2005

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.