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A085074 Smallest number a(n) ==1 (mod n) such that the prime signature of n and a(n) is the same. +0
2
3, 7, 9, 11, 55, 29, 4913, 289, 21, 23, 325, 53, 15, 46, 81, 103, 325, 191, 261, 22, 111, 47, 3625, 10201, 183, 6859, 477, 59, 1771, 311, 8587340257, 34, 35, 106, 1225, 149, 39, 118, 1161, 83, 715, 173, 45, 316, 93, 283, 60625, 9409, 801, 205, 261, 107, 11125 (list; graph; listen)
OFFSET

2,1

EXAMPLE

a(6) =55 = 9*6 +1 = 11*5 and 6 = 2*3 are both of prime signature p*q, where p and q are primes.

CROSSREFS

Sequence in context: A018596 A046807 A114788 this_sequence A110404 A087064 A087550

Adjacent sequences: A085071 A085072 A085073 this_sequence A085075 A085076 A085077

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 November 27 22:38 EST 2009. Contains 167602 sequences.


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