id:A085075 - OEIS Search Results

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Smallest number a(n) == -1 (mod n) such that the prime signature of n and a(n) is the same, or 0 if no such number exists.

+0
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3, 2, 0, 19, 35, 13, 343, 0, 39, 43, 275, 103, 55, 14, 0, 67, 539, 37, 99, 62, 21, 137, 2375, 49, 51, 4913, 279, 173, 2639, 61, 0, 65, 33, 34, 0, 73, 265, 38, 999, 163, 1595, 257, 175, 44, 91, 281, 29375, 0, 99, 203, 207, 211, 2375, 219, 783, 341, 57, 353, 14399, 487, 123 (list; graph; listen)

	OFFSET	`2,1`
	EXAMPLE	`a(6) =35 = 66 -1 = 313 and 6 = 23 are both of prime signature pq, where p and q are primes.`
	CROSSREFS	`Cf. A085074.` `Sequence in context: A067346 A111541 A105629 this_sequence A058257 A083199 A021761` `Adjacent sequences: A085072 A085073 A085074 this_sequence A085076 A085077 A085078`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 01 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jan 12 2005`

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Last modified December 6 11:04 EST 2009. Contains 170427 sequences.

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