login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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
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
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)