

A171043


In the sequence of prime numbers, replace all the '8' digits with '2' and vice versa.


3



8, 3, 5, 7, 11, 13, 17, 19, 83, 89, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 23, 29, 97, 101, 103, 107, 109, 113, 187, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 121, 191, 193, 197, 199, 811, 883, 887, 889, 833, 839, 841, 851, 857, 863
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OFFSET

1,1


LINKS

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


MATHEMATICA

FromDigits[IntegerDigits[#]/.{8>p, 2>q}/.{p>2, q>8}]&/@ Prime[ Range[60]] (* Harvey P. Dale, Nov 30 2011 *)


PROG

(PARI) a(n)=my(v=[0, 1, 8, 3, 4, 5, 6, 7, 2, 9]); subst(Pol(apply(k>v[k+1], digits(prime(n)))), 'x, 10) \\ Charles R Greathouse IV, Jul 26 2013


CROSSREFS

Sequence in context: A019728 A265183 A113476 * A124599 A005601 A321098
Adjacent sequences: A171040 A171041 A171042 * A171044 A171045 A171046


KEYWORD

nonn,base,easy


AUTHOR

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


STATUS

approved



