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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; text; 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, Jan 11 2005
LINKS
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 A370610 A367451
KEYWORD
nonn
AUTHOR
Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 29 2003
EXTENSIONS
More terms from David Wasserman, Jan 11 2005
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)