A171024 In the sequence of prime numbers, replace all the '5' digits with '1' and vice versa.

2, 3, 1, 7, 55, 53, 57, 59, 23, 29, 35, 37, 45, 43, 47, 13, 19, 65, 67, 75, 73, 79, 83, 89, 97, 505, 503, 507, 509, 553, 527, 535, 537, 539, 549, 515, 517, 563, 567, 573, 579, 585, 595, 593, 597, 599, 255, 223, 227, 229, 233, 239, 245, 215, 217, 263

Offset

1,1

Links

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

Mathematica

FromDigits[IntegerDigits[#]/.{5->p, 1->q}/.{p->1, q->5}]&/@Prime[Range[100]] (* Vincenzo Librandi, Apr 07 2013 *)

Prog

(PARI) a(n)=my(v=[0, 5, 2, 3, 4, 1, 6, 7, 8, 9]); subst(Pol(apply(k->v[k+1], digits(prime(n)))), 'x, 10) \\ Charles R Greathouse IV, Jul 16 2013

Crossrefs

Sequence in context: A104027 A192363 A097710 * A109198 A081320 A147865

Adjacent sequences: A171021 A171022 A171023 * A171025 A171026 A171027

Keyword

nonn,base,easy

Author

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

Status

approved