id:A067386 - OEIS Search Results

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primes p such p+1 and p-1 have the same number of distinct prime factors.

+0
1

3, 11, 13, 19, 23, 37, 47, 53, 73, 97, 107, 131, 139, 163, 181, 193, 229, 239, 281, 307, 311, 349, 373, 379, 383, 409, 439, 443, 487, 491, 521, 577, 599, 601, 617, 619, 643, 683, 701, 709, 727, 739, 743, 761, 811, 821, 827, 829, 853, 863, 881, 883, 919, 937 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A050583 A045428 A103835 this_sequence A063621 A066594 A116438` `Adjacent sequences: A067383 A067384 A067385 this_sequence A067387 A067388 A067389`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 23 2002`

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

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