A271380 a(n) = 5^n mod 163.

1, 5, 25, 125, 136, 28, 140, 48, 77, 59, 132, 8, 40, 37, 22, 110, 61, 142, 58, 127, 146, 78, 64, 157, 133, 13, 65, 162, 158, 138, 38, 27, 135, 23, 115, 86, 104, 31, 155, 123, 126, 141, 53, 102, 21, 105, 36, 17, 85, 99, 6, 30, 150, 98, 1, 5, 25, 125, 136, 28

Offset: 0

Author

Vincenzo Librandi, Apr 07 2016

Keywords

• nonn
• easy

Comments

Period 54: repeat [1, 5, 25, 125, 136, 28, 140, 48, 77, 59, 132, 8, 40, 37, 22, 110, 61, 142, 58, 127, 146, 78, 64, 157, 133, 13, 65, 162, 158, 138, 38, 27, 135, 23, 115, 86, 104, 31, 155, 123, 126, 141, 53, 102, 21, 105, 36, 17, 85, 99, 6, 30, 150, 98].

Links

• Felix Fröhlich, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. similar sequences listed in A271378.

Programs

Magma

[Modexp(5, n, 163): n in [0..100]];

Mathematica

PowerMod[5, Range[0, 100], 163]

PARI

a(n) = lift(Mod(5, 163)^n) \\ Felix Fröhlich, Apr 07 2016

Sage

[power_mod(5, n, 163) for n in (0..60)] # Bruno Berselli, Apr 07 2016

Formula

a(n) = a(n-54).