login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A136908 Numbers k such that k and k^2 use only the digits 0, 2, 4 and 8. 1
0, 2, 20, 22, 200, 202, 220, 2000, 2002, 2020, 2022, 2200, 2202, 20000, 20002, 20020, 20022, 20200, 20220, 22000, 22002, 22020, 200000, 200002, 200020, 200022, 200200, 200202, 200220, 202000, 202002, 202200, 220000, 220002, 220020, 220200, 2000000, 2000002, 2000020, 2000022, 2000200, 2000202, 2000220, 2002000, 2002020, 2002200, 2020000 (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..1389

J. Wellons, Tables of Shared Digits

EXAMPLE

202002000200202^2 = 40804808084882408848080840804.

CROSSREFS

Sequence in context: A136909 A169965 A202170 * A196748 A144674 A144673

Adjacent sequences:  A136905 A136906 A136907 * A136909 A136910 A136911

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 December 1 16:44 EST 2021. Contains 349430 sequences. (Running on oeis4.)