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A138409
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a(n) = prime(n)^6 - prime(n)^2.
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8
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60, 720, 15600, 117600, 1771440, 4826640, 24137280, 47045520, 148035360, 594822480, 887502720, 2565725040, 4750102560, 6321361200, 10779213120, 22164358320, 42180530160, 51520370640, 90458377680, 128100278880
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OFFSET
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1,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..200
Index to sequences related to prime powers
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FORMULA
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From Elmo R. Oliveira, Jan 17 2023: (Start)
a(n) = A030516(n) - A001248(n).
a(n) = 2 * A138441(n).
a(n) = A001248(n) * (A030514(n) - 1). (End)
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MATHEMATICA
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a = {}; Do[p = Prime[n]; AppendTo[a, p^6 - p^2], {n, 1, 50}]; a
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PROG
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(PARI) forprime(p=2, 1e3, print1(p^6-p^2", ")) \\ Charles R Greathouse IV, Jun 16 2011
(Magma) [NthPrime((n))^6 - NthPrime((n))^2: n in [1..30] ]; // Vincenzo Librandi, Jun 17 2011
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CROSSREFS
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Cf. A030516, A001248, A138441, A030514.
Sequence in context: A136008 A000555 A034865 * A024016 A348583 A349871
Adjacent sequences: A138406 A138407 A138408 * A138410 A138411 A138412
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KEYWORD
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nonn,easy
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AUTHOR
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Artur Jasinski, Mar 19 2008
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STATUS
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approved
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