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A262348 a(n) = A000215(n) mod A000045(n). 0
0, 0, 1, 2, 2, 1, 10, 17, 19, 17, 5, 17, 75, 17, 257, 983, 987, 1481, 4178, 4652, 7433, 3488, 10665, 19169, 51372, 538, 257, 65537, 422030, 17, 111134, 430622, 592107, 1036631, 4104877, 11311649, 4963932, 23430341, 16834037, 65537, 67016878, 53547017, 316617399 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..43.

Eric Weisstein's World of Mathematics, Fermat Number

Eric Weisstein's World of Mathematics, Fibonacci Number

MATHEMATICA

f[n_] := Mod[ PowerMod[2, 2^n, Fibonacci[n]] + 1, Fibonacci[n]]; Array[f, 43] (* Robert G. Wilson v, Sep 18 2015 *)

PROG

(MAGMA) [(2^(2^n) + 1) mod(Fibonacci(n)): n in [1..29]]; // Vincenzo Librandi, Sep 19 2015

(PARI) a(n) = my (fn = fibonacci(n)); lift(Mod(Mod(2, fn)^(2^n) + 1, fn)); \\ Michel Marcus, Sep 19 2015

CROSSREFS

Cf. A000045, A000215, A182213, A246846.

Sequence in context: A105620 A182002 A184251 * A307093 A327087 A088876

Adjacent sequences:  A262345 A262346 A262347 * A262349 A262350 A262351

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Sep 18 2015

EXTENSIONS

More terms from Robert G. Wilson v, Sep 18 2015

STATUS

approved

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Last modified August 21 23:04 EDT 2019. Contains 326169 sequences. (Running on oeis4.)