id:A086085 - OEIS Search Results

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Primes p such that p+floor(Sqrt(p)) is prime.

+0
3

2, 5, 19, 37, 41, 47, 71, 103, 151, 167, 197, 277, 331, 349, 401, 419, 487, 499, 577, 593, 607, 617, 619, 683, 701, 811, 829, 907, 911, 937, 941, 947, 953, 1031, 1061, 1451, 1493, 1511, 1627, 1657, 1669, 1789, 1831, 1847, 1949, 1973, 2161, 2309, 2333, 2341 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(3)=19 because 19 is prime and 19 + (floor(Sqrt(19)) = 19 + (floor(4.358898944)) = 19 + 4 = 23 which is prime.`
	CROSSREFS	`Sequence in context: A092946 A090700 A105889 this_sequence A138250 A077323 A072468` `Adjacent sequences: A086082 A086083 A086084 this_sequence A086086 A086087 A086088`
	KEYWORD	`nonn`
	AUTHOR	`Chuck Seggelin (barkeep(AT)plastereddragon.com), Jul 08 2003`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 31 2008`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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