id:A064402 - OEIS Search Results

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Numbers n such that prime(n)+n is a prime, where prime(n) denotes the n-th prime number.

+0
8

1, 2, 4, 6, 18, 22, 24, 26, 32, 34, 42, 48, 66, 70, 72, 82, 92, 96, 98, 100, 102, 104, 106, 108, 114, 116, 126, 130, 144, 150, 152, 158, 172, 180, 200, 202, 204, 206, 218, 222, 228, 236, 270, 282, 290, 300, 312, 322, 324, 328, 330, 350, 352, 356, 362, 378, 384 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = order among the primes of A061067(n).`
	FORMULA	`A061067(n) + a(n) = A061068(n).`
	MATHEMATICA	`Select[ Range[ 400 ], PrimeQ[ Prime[ # ] + # ] & ]`
	CROSSREFS	`Cf. A061067, A061068, A064269.` `Sequence in context: A067993 A074131 A019464 this_sequence A075229 A073664 A088174` `Adjacent sequences: A064399 A064400 A064401 this_sequence A064403 A064404 A064405`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 28 2001`
	EXTENSIONS	`Edited by njas at the suggestion of Andrew Plewe, Jun 08 2007`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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