A171019 In the sequence of prime numbers, replace all the '4' digits with '0' and vice versa.

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 1, 3, 7, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 141, 143, 147, 149, 113, 127, 131, 137, 139, 109, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 201, 251, 257, 263, 269

Offset

1,1

Links

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

Mathematica

FromDigits[IntegerDigits[#]/.{4->p, 0->q}/.{p->0, q->4}]&/@Prime[Range[100]] (* Vincenzo Librandi, Apr 07 2013 *)

Prog

(PARI) a(n)=my(v=[4, 1, 2, 3, 0, 5, 6, 7, 8, 9]); subst(Pol(apply(k->v[k+1], digits(prime(n)))), 'x, 10) \\ Charles R Greathouse IV, Jul 16 2013

Crossrefs

Sequence in context: A247142 A350342 A369093 * A249825 A117095 A054403

Adjacent sequences: A171016 A171017 A171018 * A171020 A171021 A171022

Keyword

nonn,base,easy

Author

N. J. A. Sloane and Vincenzo Librandi, Sep 04 2010

Status

approved