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a(n+1) is the smallest odd prime not already used such that a(n)*a(n+1)+2 is prime.

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`%I #5 Dec 05 2013 19:56:49
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`%S 3,5,7,11,19,23,37,17,13,29,43,53,109,71,31,47,73,227,163,59,79,113,
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`%T 67,41,61,89,139,131,241,149,103,167,127,101,157,83,97,137,181,179,
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`%U 151,191,199,173,193,233,229,269,271,251,211,317,277,107,313,293,349,311
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`%N a(n+1) is the smallest odd prime not already used such that a(n)*a(n+1)+2 is prime.
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`%Y Cf. A093930.
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`%K easy,nonn
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`%O 1,1
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`%A _Amarnath Murthy_, Apr 25 2004
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`%E Edited and extended by _David Wasserman_, Jan 10 2006
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