A171016 - OEIS

%I #12 Mar 31 2017 20:31:54

%S 2,0,5,7,11,10,17,19,20,29,1,7,41,40,47,50,59,61,67,71,70,79,80,89,97,

%T 131,130,137,139,110,127,101,107,109,149,151,157,160,167,170,179,181,

%U 191,190,197,199,211,220,227,229,200,209,241,251,257,260,269

%N In the sequence of prime numbers, replace all the '3' digits with '0' and vice versa.

%H Vincenzo Librandi, <a href="/A171016/b171016.txt">Table of n, a(n) for n = 1..1000</a>

%t FromDigits[IntegerDigits[#]/.{3->p, 0->q}/.{p->0, q->3}]&/@Prime[Range[100]] (* _Vincenzo Librandi_, Mar 11 2013 *)

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

%K nonn,base,easy

%O 1,1

%A _N. J. A. Sloane_ and _Vincenzo Librandi_, Sep 04 2010