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A171032 In the sequence of prime numbers, replace all the '6' digits with '4' and vice versa. 3
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 61, 63, 67, 53, 59, 41, 47, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 169, 151, 157, 143, 147, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 261, 251, 257, 243 (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, 4->q}/.{p->4, q->6}]&/@Prime[Range[100]] (* Vincenzo Librandi, Apr 07 2013 *)

PROG

(PARI) a(n)=my(v=[0, 1, 2, 3, 6, 5, 4, 7, 8, 9]); subst(Pol(apply(k->v[k+1], digits(prime(n)))), 'x, 10) \\ Charles R Greathouse IV, Jul 25 2013

CROSSREFS

Sequence in context: A038612 A012883 A296915 * A171045 A222566 A299171

Adjacent sequences:  A171029 A171030 A171031 * A171033 A171034 A171035

KEYWORD

nonn,base,easy

AUTHOR

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

STATUS

approved

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Last modified November 13 04:20 EST 2019. Contains 329085 sequences. (Running on oeis4.)