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A020480

Primes p which divide no f(q)-1 or f(q)+1 for prime q < p, where f(q) is the product of all primes <= q.

+0
1

2, 13, 17, 23, 41, 43, 47, 67, 71, 83, 89, 101, 103, 107, 109, 113, 127, 137, 151, 157, 179, 193, 199, 227, 233, 239, 241, 251, 257, 263, 269, 281, 283, 293, 337, 353, 359, 367, 373, 379, 383, 397, 401, 419, 421, 431, 433, 439, 449, 457, 461, 479, 487, 491, 499, 503, 523 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A038889 A141133 A105913 this_sequence A018459 A037384 A122487` `Adjacent sequences: A020477 A020478 A020479 this_sequence A020481 A020482 A020483`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.

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