id:A087520 - OEIS Search Results

Search: id:A087520

Displaying 1-1 of 1 results found.

page 1

Smallest prime p such that the prime signature of p-1 has not occurred earlier.

+0
2

2, 3, 5, 7, 13, 17, 31, 37, 41, 61, 73, 97, 113, 181, 193, 211, 241, 257, 271, 401, 421, 433, 541, 577, 641, 673, 769, 1009, 1153, 1297, 1321, 1801, 2017, 2113, 2161, 2311, 2341, 2377, 2521, 2593, 2689, 3121, 3361, 3457, 4001, 4357, 4621, 4801, 6301, 6481 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`Primes 19 and 29 are not members as the prime signatue p^2*q is is the same as that corresponding to the prime 13 (12, 18 and 28 have the same prime signature).`
	CROSSREFS	`Cf. A087521.` `Sequence in context: A092621 A048975 A009571 this_sequence A117159 A134873 A118724` `Adjacent sequences: A087517 A087518 A087519 this_sequence A087521 A087522 A087523`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 11 2003`
	EXTENSIONS	`Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 14 2003`

page 1

Search completed in 0.002 seconds

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research