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5, 9, 33, 513, 131073, 8589934593, 36893488147419103233, 680564733841876926926749214863536422913, 231584178474632390847141970017375815706539969331281128078915168015826259279873
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..13
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EXAMPLE
| a(0)=5 because (2^((2^0)+1))+1=(2^(1+1))+1=(2^2)+1=4+1=5.
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MATHEMATICA
| 2^(2^Range[0, 9] + 1) + 1 (* From Vladimir Joseph Stephan Orlovsky, Jun 22 2011 *)
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PROG
| (MAGMA) [(2^((2^n)+1))+1: n in [0..8]]; // Vincenzo Librandi, Jun 20 2011
(PARI) a(n)=1<<(2^n+1)+1 \\ Charles R Greathouse IV, Jul 30 2011
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CROSSREFS
| Cf. A000215, A077585.
Sequence in context: A028351 A098640 A083832 * A200376 A098477 A176967
Adjacent sequences: A070966 A070967 A070968 * A070970 A070971 A070972
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KEYWORD
| nonn
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AUTHOR
| Anon, May 17 2002
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EXTENSIONS
| Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), May 20 2002
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