login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A171019 In the sequence of prime numbers, replace all the '4' digits with '0' and vice versa. 3
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 1, 3, 7, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 141, 143, 147, 149, 113, 127, 131, 137, 139, 109, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 201, 251, 257, 263, 269 (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[#]/.{4->p, 0->q}/.{p->0, q->4}]&/@Prime[Range[100]] (* Vincenzo Librandi, Apr 07 2013 *)

PROG

(PARI) a(n)=my(v=[4, 1, 2, 3, 0, 5, 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: A326715 A089063 A247142 * A249825 A117095 A054403

Adjacent sequences:  A171016 A171017 A171018 * A171020 A171021 A171022

KEYWORD

nonn,base,easy

AUTHOR

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

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 7 19:57 EDT 2020. Contains 336279 sequences. (Running on oeis4.)