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Search: id:A138956
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A138956 Primes of the form (4^n + 5^n)/9. +0
1
461, 10501, 2149818248341, 20728082811027490541, 481868222983777875077033646523111996342381, 63774650109719491827977851592475862662743267652837460857617262084586443004114519\ 194264814815101 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

a={}; Do[p=(4^n+5^n)/9; If[PrimeQ[p], AppendTo[a, p]], {n, 1, 12^2}]; a

CROSSREFS

Cf. A128335.

Sequence in context: A048923 A107973 A142832 this_sequence A107121 A101734 A059025

Adjacent sequences: A138953 A138954 A138955 this_sequence A138957 A138958 A138959

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), May 16 2008

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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