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A078744 Numbers n such that { (product of all the composite numbers <= n) + the n-th prime } is prime. 1
1, 4, 6, 7, 8, 13, 17, 18, 21, 41, 86, 101, 144, 368, 1232, 1713 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Some of the larger entries may only correspond to probable primes.

CROSSREFS

Cf. A000142, A034386, A078745.

Sequence in context: A100349 A047507 A024554 * A024555 A001690 A105447

Adjacent sequences:  A078741 A078742 A078743 * A078745 A078746 A078747

KEYWORD

more,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Dec 21 2002

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.