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A171026 In the sequence of prime numbers, replace all the '5' digits with '3' and vice versa. 3


%S 2,5,3,7,11,15,17,19,25,29,51,57,41,45,47,35,39,61,67,71,75,79,85,89,

%T 97,101,105,107,109,115,127,151,157,159,149,131,137,165,167,175,179,

%U 181,191,195,197,199,211,225,227,229,255,259,241,231,237,265

%N In the sequence of prime numbers, replace all the '5' digits with '3' and vice versa.

%H Vincenzo Librandi, <a href="/A171026/b171026.txt">Table of n, a(n) for n = 1..1000</a>

%t FromDigits[IntegerDigits[#]/.{5->p, 3->q}/.{p->3, q->5}]&/@Prime[Range[100]] (* _Vincenzo Librandi_, Apr 07 2013 *)

%o (PARI) a(n)=my(v=[0,1,2,5,4,3,6,7,8,9]);subst(Pol(apply(k->v[k+1], digits(prime(n)))),'x,10) \\ _Charles R Greathouse IV_, Jul 24 2013

%K nonn,base,easy

%O 1,1

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

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Last modified December 1 14:10 EST 2021. Contains 349430 sequences. (Running on oeis4.)