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%I #9 Mar 31 2017 11:12:43
%S 2,3,6,7,11,13,17,19,23,29,31,37,41,43,47,63,69,51,57,71,73,79,83,89,
%T 97,101,103,107,109,113,127,131,137,139,149,161,167,153,157,173,179,
%U 181,191,193,197,199,211,223,227,229,233,239,241,261,267,253
%N In the sequence of prime numbers, replace all the '6' digits with '5' and vice versa.
%H Vincenzo Librandi, <a href="/A171033/b171033.txt">Table of n, a(n) for n = 1..1000</a>
%t FromDigits[IntegerDigits[#]/.{6->p, 5->q}/.{p->5, q->6}]&/@Prime[Range[100]] (* _Vincenzo Librandi_, Apr 07 2013 *)
%o (PARI) a(n)=my(v=[0,1,2,3,4,6,5,7,8,9]);subst(Pol(apply(k->v[k+1], digits(prime(n)))),'x,10) \\ _Charles R Greathouse IV_, Jul 25 2013
%K nonn,base,easy
%O 1,1
%A _N. J. A. Sloane_ and _Vincenzo Librandi_, Sep 04 2010
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