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Search: id:A085065
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| A085065 |
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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. |
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+0
2
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| 4, 9, 289, 332929, 8867310888979, 78629202401805543263662441, 24730205881376410453776804740727484868533062121664161
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OFFSET
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1,1
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COMMENT
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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
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CROSSREFS
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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.
Adjacent sequences: A085062 A085063 A085064 this_sequence A085066 A085067 A085068
Sequence in context: A051671 A109103 A029734 this_sequence A068708 A063248 A027522
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), Jun 29 2003
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jan 11 2005
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