id:A052291 - OEIS Search Results

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Primes p such that 4p^2 + 1 is also prime.

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2, 3, 5, 7, 13, 37, 47, 67, 73, 103, 157, 163, 193, 233, 317, 337, 547, 587, 647, 653, 677, 683, 773, 827, 883, 887, 947, 983, 1013, 1063, 1087, 1163, 1297, 1327, 1373, 1487, 1493, 1523, 1553, 1567, 1607, 1627, 1637, 1657, 1663, 1667, 1723, 1867, 1873 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..5000` `Marek Wolf, Search for primes of the form m^2+1`
	EXAMPLE	`the 5th term is 13 and 4*169+1 = 677 is also a prime`
	CROSSREFS	`Cf. A052292.` `Sequence in context: A048399 A140768 A050779 this_sequence A072826 A084761 A038965` `Adjacent sequences: A052288 A052289 A052290 this_sequence A052292 A052293 A052294`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Feb 08 2000`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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