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A171030 In the sequence of prime numbers, replace all the '6' digits with '2' and vice versa. 3
6, 3, 5, 7, 11, 13, 17, 19, 63, 69, 31, 37, 41, 43, 47, 53, 59, 21, 27, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 167, 131, 137, 139, 149, 151, 157, 123, 127, 173, 179, 181, 191, 193, 197, 199, 611, 663, 667, 669, 633, 639, 641, 651, 657, 623 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

FromDigits[IntegerDigits[#]/.{6->p, 2->q}/.{p->2, q->6}]&/@Prime[Range[100]] (* Vincenzo Librandi, Apr 07 2013 *)

PROG

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

CROSSREFS

Sequence in context: A245273 A199728 A199867 * A294386 A217769 A296501

Adjacent sequences:  A171027 A171028 A171029 * A171031 A171032 A171033

KEYWORD

nonn,base,easy

AUTHOR

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

STATUS

approved

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Last modified January 17 23:51 EST 2022. Contains 350410 sequences. (Running on oeis4.)