id:A158708 - OEIS Search Results

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Primes p such that Floor[p/2]+p is prime.

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16

2, 5, 13, 29, 41, 53, 73, 101, 109, 149, 181, 233, 281, 293, 349, 401, 409, 421, 449, 461, 541, 569, 613, 661, 673, 701, 709, 769, 809, 821, 853, 881, 953, 1021, 1033, 1109, 1129, 1193, 1201, 1249, 1289, 1301, 1409, 1429, 1453, 1481, 1493, 1669, 1693, 1789 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Floor[5/2]+5=7, Floor[13/2]+13=19, ...`
	MATHEMATICA	`lst={}; Do[p=Prime[n]; If[PrimeQ[Floor[p/2]+p], AppendTo[lst, p]], {n, 6!}]; lst`
	CROSSREFS	`Sequence in context: A002559 A049097 A045366 this_sequence A093702 A011756 A050950` `Adjacent sequences: A158705 A158706 A158707 this_sequence A158709 A158710 A158711`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), Mar 24 2009`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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