A171013 In the sequence of prime numbers, replace all digits '1' with '0' and vice versa.

2, 3, 5, 7, 0, 3, 7, 9, 23, 29, 30, 37, 40, 43, 47, 53, 59, 60, 67, 70, 73, 79, 83, 89, 97, 10, 13, 17, 19, 3, 27, 30, 37, 39, 49, 50, 57, 63, 67, 73, 79, 80, 90, 93, 97, 99, 200, 223, 227, 229, 233, 239, 240, 250, 257, 263, 269, 270, 277, 280, 283, 293, 317

Offset: 1

Author

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

Keywords

• nonn
• base
• easy

Links

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

Crossrefs

Cf. A171013-A171016, A175770, A171018-A171057; A222210-A222254.

Programs

Mathematica

FromDigits[IntegerDigits[#]/.{1->p,0->q}/.{p->0,q->1}]&/@Prime[Range[100]] (* Vincenzo Librandi, Jul 06 2012 *)

PARI

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

Formula

a(n) = A222210(A000040(n)). - M. F. Hasler, Feb 13 2013