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!)
A136947 Numbers k such that k and k^2 use only the digits 0, 3, 7, 8 and 9. 1
0, 3, 30, 300, 3000, 30000, 300000, 989803, 3000000, 8370783, 9889783, 9898030, 30000000, 83707830, 88830783, 89330333, 89380833, 89909833, 93803033, 98897830, 98980300, 300000000, 837078300, 878003303, 888307830, 893303330, 893808330, 893889803, 899098330, 938030330, 988978300, 989803000, 998998003, 3000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Generated with DrScheme.
LINKS
EXAMPLE
998903093797083^2 = 997807390797383997790779308889.
CROSSREFS
Sequence in context: A136929 A136935 A136942 * A093138 A361896 A073557
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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 23 00:26 EST 2024. Contains 370265 sequences. (Running on oeis4.)