A171040 In the sequence of prime numbers, replace all the '7' digits with '6' and vice versa.

2, 3, 5, 6, 11, 13, 16, 19, 23, 29, 31, 36, 41, 43, 46, 53, 59, 71, 76, 61, 63, 69, 83, 89, 96, 101, 103, 106, 109, 113, 126, 131, 136, 139, 149, 151, 156, 173, 176, 163, 169, 181, 191, 193, 196, 199, 211, 223, 226, 229, 233, 239, 241, 251, 256, 273

Offset

1,1

Links

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

Mathematica

FromDigits[IntegerDigits[#]/.{7->p, 6->q}/.{p->6, q->7}]&/@Prime[Range[100]] (* Vincenzo Librandi, Mar 11 2013 *)

Prog

(PARI) a(n)=my(v=[0, 1, 2, 3, 4, 5, 7, 6, 8, 9]); subst(Pol(apply(k->v[k+1], digits(prime(n)))), 'x, 10) \\ Charles R Greathouse IV, Jul 26 2013

Crossrefs

Sequence in context: A137808 A275525 A091909 * A317256 A100883 A240303

Adjacent sequences: A171037 A171038 A171039 * A171041 A171042 A171043

Keyword

nonn,base,easy

Author

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

Status

approved