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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A222244 In the number n, replace all (decimal) digits '4' with '9' and vice versa. 1
0, 1, 2, 3, 9, 5, 6, 7, 8, 4, 10, 11, 12, 13, 19, 15, 16, 17, 18, 14, 20, 21, 22, 23, 29, 25, 26, 27, 28, 24, 30, 31, 32, 33, 39, 35, 36, 37, 38, 34, 90, 91, 92, 93, 99, 95, 96, 97, 98, 94, 50, 51, 52, 53, 59, 55, 56, 57, 58, 54, 60, 61, 62, 63, 69, 65, 66, 67, 68, 64, 70, 71, 72, 73, 79, 75 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

The map which is applied to primes in A171053.

LINKS

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

MATHEMATICA

a[n_]:= IntegerDigits[n]/.{4->9, 9->4} // FromDigits; Table[a[n], {n, 0, 80}] (* Vincenzo Librandi, Jul 31 2013 *)

PROG

(PARI) A222244(n, d=[0, 1, 2, 3, 9, 5, 6, 7, 8, 4])={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: A202017 A127198 A065631 * A176570 A269559 A083173

Adjacent sequences:  A222241 A222242 A222243 * A222245 A222246 A222247

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 April 18 22:08 EDT 2019. Contains 322237 sequences. (Running on oeis4.)