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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A131573 Numbers whose square starts with 3 identical digits. 4
149, 298, 334, 472, 667, 745, 882, 1054, 1055, 1056, 1057, 1058, 1490, 1491, 1492, 1493, 1825, 1826, 1827, 2108, 2109, 2356, 2357, 2581, 2582, 2788, 2789, 2980, 2981, 3161, 3162, 3332, 3333, 3334, 3335, 3336, 3337, 3338, 3339, 3340, 3341, 3342, 3343 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..43.

EXAMPLE

149^2 = 22201.

MATHEMATICA

Select[Range[10, 5000], Length[Union[Take[IntegerDigits[ #^2], 3]]] == 1 &]

CROSSREFS

Sequence in context: A107176 A140023 A105843 * A244661 A146137 A071331

Adjacent sequences:  A131570 A131571 A131572 * A131574 A131575 A131576

KEYWORD

base,nonn

AUTHOR

Tanya Khovanova, Aug 28 2007

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 June 23 23:18 EDT 2017. Contains 288676 sequences.