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!)
A136909 Numbers k such that k and k^2 use only the digits 0, 2, 4, 8 and 9. 1
0, 2, 20, 22, 200, 202, 220, 222, 288, 298, 498, 2000, 2002, 2020, 2022, 2200, 2202, 2220, 2880, 2980, 2998, 4980, 4998, 20000, 20002, 20020, 20022, 20200, 20220, 20222, 22000, 22002, 22020, 22200, 22202, 28800, 28998, 29800, 29980, 29998, 44998, 48998, 49800, 49980, 49998, 89498, 200000, 200002, 200020, 200022, 200200, 200202, 200220, 200222 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Generated with DrScheme.

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..1093

J. Wellons, Tables of Shared Digits

EXAMPLE

92098040202^2 = 8482049009049208200804.

MATHEMATICA

Module[{c={0, 2, 4, 8, 9}, t}, t=FromDigits/@Tuples[c, 6]; Select[t, SubsetQ[c, IntegerDigits[#^2]]&]] (* Harvey P. Dale, Nov 26 2014 *)

CROSSREFS

Sequence in context: A322964 A112405 A136885 * A169965 A202170 A136908

Adjacent sequences:  A136906 A136907 A136908 * A136910 A136911 A136912

KEYWORD

base,nonn

AUTHOR

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

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 October 16 06:14 EDT 2021. Contains 348040 sequences. (Running on oeis4.)