login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A222251 In the number n, replace all (decimal) digits '6' with '9' and vice versa. 1
0, 1, 2, 3, 4, 5, 9, 7, 8, 6, 10, 11, 12, 13, 14, 15, 19, 17, 18, 16, 20, 21, 22, 23, 24, 25, 29, 27, 28, 26, 30, 31, 32, 33, 34, 35, 39, 37, 38, 36, 40, 41, 42, 43, 44, 45, 49, 47, 48, 46, 50, 51, 52, 53, 54, 55, 59, 57, 58, 56, 90, 91, 92, 93, 94, 95, 99, 97, 98, 96, 70, 71, 72, 73, 74, 75 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

The map which is applied to primes in A171055.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

MATHEMATICA

a[n_]:= IntegerDigits[n]/.{6->9, 9->6} // FromDigits; Table[a[n], {n, 0, 80}] (* Vincenzo Librandi, Jul 31 2013 *)

PROG

(PARI) A222251(n, d=[0, 1, 2, 3, 4, 5, 9, 7, 8, 6])=sum(i=1, #n=digits(n), d[n[i]+1]*10^(#n-i), !n*d[1]) \\ N.B.: digits(0)=[] in PARI (v.2.6)

CROSSREFS

Cf. A222210-A222254; A171013-A171016, A175770, A171018-A171057.

Sequence in context: A075161 A029636 A298268 * A241916 A079871 A273291

Adjacent sequences:  A222248 A222249 A222250 * A222252 A222253 A222254

KEYWORD

nonn,base,easy

AUTHOR

M. F. Hasler, Feb 13 2013

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 25 03:55 EDT 2019. Contains 326318 sequences. (Running on oeis4.)