A297967 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A297967

a(n) = 5^n mod prime(n).

1

1, 1, 0, 2, 1, 12, 10, 4, 11, 20, 25, 10, 39, 36, 41, 13, 36, 58, 52, 1, 17, 26, 19, 64, 13, 5, 94, 14, 25, 36, 40, 74, 117, 81, 6, 123, 24, 155, 134, 117, 20, 42, 69, 36, 185, 111, 121, 16, 206, 159, 42, 220, 47, 123, 130, 61, 57, 83, 6, 79, 270, 14, 91

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

FORMULA

a(n) = A000351(n) mod A000040(n).

MATHEMATICA

Array[PowerMod[5, #, Prime@#]&, 80]

PROG

(Magma) [Modexp(5, n, NthPrime(n)): n in [1..80]];

CROSSREFS

Cf. A000040, A000351, A064367, A066603, A297966.

Sequence in context: A090586 A268512 A217109 * A199930 A278330 A048854

Adjacent sequences: A297964 A297965 A297966 * A297968 A297969 A297970

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Jan 15 2018

STATUS

approved