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A138402
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a(n) = (n-th prime)^4)-(n-th prime)^2.
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14
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12, 72, 600, 2352, 14520, 28392, 83232, 129960, 279312, 706440, 922560, 1872792, 2824080, 3416952, 4877472, 7887672, 12113880, 13842120, 20146632, 25406640, 28392912, 38943840, 47451432, 62734320, 88519872, 104050200, 112540272
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Differences p^k-p^m such that k > m:
p^2-p is given in A036689
p^3-p is given in A127917
p^3-p^2 is given in A135177
p^4-p is given in A138401
p^4-p^3 is given in A138403
p^5-p is given in A138404
p^5-p^2 is given in A138405
p^5-p^3 is given in A138406
p^5-p^4 is given in A138407
p^6-p is given in A138408
p^6-p^2 is given in A138409
p^6-p^3 is given in A138410
p^6-p^4 is given in A138411
p^6-p^5 is given in A138412
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 1..200
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MATHEMATICA
| a = {}; Do[p = Prime[n]; AppendTo[a, p^4 - p^2], {n, 1, 50}]; a
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PROG
| (PARI) forprime(p=2, 1e3, print1(p^4-p^2", ")) \\ Charles R Greathouse IV, Jun 16 2011
(MAGMA) [NthPrime((n))^4 - NthPrime((n))^2: n in [1..30] ]; // Vincenzo Librandi, Jun 17 2011
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CROSSREFS
| Sequence in context: A126480 A030235 A088166 * A108734 A143559 A120793
Adjacent sequences: A138399 A138400 A138401 * A138403 A138404 A138405
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KEYWORD
| nonn,easy
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Mar 19 2008
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