login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A053949 Squares composed of digits {3,6,9}. 2
9, 36, 3969, 69696, 93636, 3663396, 9696996, 966339396, 6693366969, 36333696996, 63396693369, 96693633936, 33993333636639339663936, 399339393339639693369636, 9936969933633699966996996, 396693636699939696999339663969, 6636966336636339969666396999936, 339666666363999366939366969366969936633336969 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

Author?, Source, (txt)

H. Mishima, Sporadic tridigital solutions

CROSSREFS

Cf. A053948.

Sequence in context: A246757 A079655 A203764 * A071134 A116108 A232257

Adjacent sequences:  A053946 A053947 A053948 * A053950 A053951 A053952

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Mar 15 2000.

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 14 2005

One more term from Jon E. Schoenfield, Sep 04 2006

Three more terms from Mishima's webpage added by Max Alekseyev, Jun 17 2011

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified September 21 15:28 EDT 2017. Contains 292306 sequences.