A004679 Primes written in base 5.

2, 3, 10, 12, 21, 23, 32, 34, 43, 104, 111, 122, 131, 133, 142, 203, 214, 221, 232, 241, 243, 304, 313, 324, 342, 401, 403, 412, 414, 423, 1002, 1011, 1022, 1024, 1044, 1101, 1112, 1123, 1132, 1143, 1204, 1211, 1231, 1233, 1242, 1244, 1321, 1343, 1402, 1404, 1413, 1424, 1431

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy
• base

Links

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

Crossrefs

Cf. similar sequences listed in A004680.

Cf. A000040, A007091.

Programs

Magma

[Seqint(Intseq(NthPrime(n), 5)): n in [1..60]]; // G. C. Greubel, Oct 12 2018

Mathematica

FromDigits/@IntegerDigits[Prime[Range[50]],5] (* Harvey P. Dale, Dec 09 2010 *)

PARI

a(n)=subst(Pol(digits(prime(n),5)),'x,10) \\ Charles R Greathouse IV, Nov 06 2013

Formula

a(n) = A007091(A000040(n)). - Michel Marcus, Sep 03 2016