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A085065 a(1) = 4, a(n) = smallest number of the form k*a(n-1) +1 with the same prime signature p^2, where p is a prime. 1
4, 9, 289, 332929, 8867310888979, 78629202401805543263662441, 24730205881376410453776804740727484868533062121664161 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

a(8) = (28*A(7)+1)^2, which has 108 digits and is too large to include. - David Wasserman (wasserma(AT)spawar.navy.mil), Jan 11 2005

CROSSREFS

A061092 gives the sequence with a(1) = 2 i.e. terms of the form k*a(n-1)+1 which are primes.( prime signature p^1)

Cf. A061092.

Sequence in context: A051671 A109103 A029734 * A068708 A063248 A027522

Adjacent sequences:  A085062 A085063 A085064 * A085066 A085067 A085068

KEYWORD

nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), Jun 29 2003

EXTENSIONS

More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jan 11 2005

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Last modified February 16 10:53 EST 2012. Contains 205904 sequences.