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!)
A253606 Numbers n such that digits of n are not present in n^8. 2
3, 4, 8, 9, 22, 33, 43, 54, 59, 73, 222, 233, 353, 712, 777, 22224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(17) > 10^9.

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

4^8 = 65536 which does not contain the digit 4.

MATHEMATICA

a253606[n_] := Block[{f},

  f[x_] := MemberQ[IntegerDigits[x^8], #] & /@ IntegerDigits[x];

Select[Range@n, DeleteDuplicates@f[#] == {False} &]]; a253606[10^5] (* Michael De Vlieger, Jan 06 2015 *)

PROG

(Python)

A253606_list = [n for n in range(1, 10**6) if set(str(n)) & set(str(n**8)) == set()]

CROSSREFS

Cf. A111116, A253577.

Sequence in context: A245282 A320355 A113057 * A258640 A345223 A185726

Adjacent sequences:  A253603 A253604 A253605 * A253607 A253608 A253609

KEYWORD

nonn,base,more

AUTHOR

Chai Wah Wu, Jan 05 2015

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 September 30 11:58 EDT 2022. Contains 357105 sequences. (Running on oeis4.)