A242123 a(n) = n-th prime modulo 25.

2, 3, 5, 7, 11, 13, 17, 19, 23, 4, 6, 12, 16, 18, 22, 3, 9, 11, 17, 21, 23, 4, 8, 14, 22, 1, 3, 7, 9, 13, 2, 6, 12, 14, 24, 1, 7, 13, 17, 23, 4, 6, 16, 18, 22, 24, 11, 23, 2, 4, 8, 14, 16, 1, 7, 13, 19, 21, 2, 6, 8, 18, 7, 11, 13, 17, 6, 12, 22, 24, 3, 9, 17

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Formula

Sum_k={1..n} a(k) ~ (25/2)*n. - Amiram Eldar, Dec 12 2024

Mathematica

Mod[Prime[Range[100]], 25]

Prog

(Magma) [p mod(25): p in PrimesUpTo(500)];
(PARI) a(n) = prime(n) % 25; \\ Michel Marcus, May 05 2014
(SageMath) [mod(p, 25) for p in primes(500)] # Bruno Berselli, May 05 2014

Crossrefs

Cf. similar sequences listed in A242119.

Sequence in context: A113580 A242124 A117322 * A229787 A329147 A048380

Adjacent sequences: A242120 A242121 A242122 * A242124 A242125 A242126

Keyword

nonn,easy

Author

Vincenzo Librandi, May 05 2014

Status

approved