A171052 In the sequence of prime numbers, replace all the '9' digits with '3' and vice versa.

2, 9, 5, 7, 11, 19, 17, 13, 29, 23, 91, 97, 41, 49, 47, 59, 53, 61, 67, 71, 79, 73, 89, 83, 37, 101, 109, 107, 103, 119, 127, 191, 197, 193, 143, 151, 157, 169, 167, 179, 173, 181, 131, 139, 137, 133, 211, 229, 227, 223, 299, 293, 241, 251, 257, 269

Offset

1,1

Links

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

Mathematica

FromDigits[IntegerDigits[#] /. {3 -> x, 9 -> y} /. {x -> 9, y -> 3}] & /@ Prime[Range[60]]  (* Harvey P. Dale, Feb 23 2011 *)

Prog

(PARI) a(n)=my(v=[0, 1, 2, 9, 4, 5, 6, 7, 8, 3]); subst(Pol(apply(k->v[k+1], digits(prime(n)))), 'x, 10) \\ Charles R Greathouse IV, Jul 31 2013

Crossrefs

Sequence in context: A339204 A253169 A339925 * A021342 A069857 A076841

Adjacent sequences: A171049 A171050 A171051 * A171053 A171054 A171055

Keyword

nonn,base,easy

Author

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

Status

approved