id:A066064 - OEIS Search Results

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a(n) = pq in decimal notation where p = prime(n) and q is the smallest prime (A066065(n)) such that p.q is a prime.

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23, 37, 53, 73, 113, 137, 173, 193, 233, 293, 313, 373, 4111, 433, 4723, 5323, 593, 613, 673, 7129, 733, 797, 8311, 8923, 977, 1013, 1033, 10711, 1093, 11311, 1277, 13147, 1373, 13913, 1493, 15131, 15731, 1637, 16729, 1733, 17911, 18119, 1913 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`A000040(2) = 3 and as 32, 33, and 35 are composite, the next prime 7 = A066065(2) yields a(2) = 37.`
	CROSSREFS	`Sequence in context: A019549 A129800 A105184 this_sequence A092622 A129351 A124888` `Adjacent sequences: A066061 A066062 A066063 this_sequence A066065 A066066 A066067`
	KEYWORD	`base,nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Dec 01 2001`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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