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A061063
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a(n) = 2^(2^n)*3^(2^n) - 2^(2^n) - 3^(2^n).
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1
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OFFSET
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0,2
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COMMENTS
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For n = 1, 4, 5, 7, values are primes.
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LINKS
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FORMULA
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a(n) = 2^(2^n)*3^(2^n) -2^(2^n) - 3^(2^n).
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MATHEMATICA
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f[n_]:=Module[{n1=2^2^n, n2=3^2^n}, n1 n2-n1-n2]; f/@Range[0, 7] (* Harvey P. Dale, Apr 04 2011 *)
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PROG
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(PARI) { for (n=0, 10, p=2^n; w=2^p; h=3^p; write("b061063.txt", n, " ", w*h - w - h) ) } \\ Harry J. Smith, Jul 17 2009
(Magma) [6^(2^n) - 2^(2^n) - 3^(2^n): n in [0..12]]; // Vincenzo Librandi, Apr 05 2011
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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