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!)
A065690 a(1) = 0; for n > 1, a(n) is the square root of the smallest square > a(n-1)^2 with a(n-1)^2 forming its final digits. 9
0, 10, 90, 410, 12090, 4699590, 1762700012090, 60424089429999995300410, 163858711658690481272000000000001762700012090, 284443295612274221167414335130587074570377999999999999999999999939575910570000004699590 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
a(n) = 10*A050635(n-1) for n > 1; a(n) = sqrt(A065689(n)).
LINKS
CROSSREFS
Sequence in context: A024132 A192898 A044261 * A202919 A202576 A201723
KEYWORD
base,nonn
AUTHOR
Klaus Brockhaus, Nov 17 2001
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 April 22 02:54 EDT 2024. Contains 371887 sequences. (Running on oeis4.)