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A131573 Numbers whose square starts with 3 identical digits. 6
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
EXAMPLE
149^2 = 22201.
MATHEMATICA
Select[Range[10, 5000], Length[Union[Take[IntegerDigits[ #^2], 3]]] == 1 &]
CROSSREFS
Sequence in context: A107176 A140023 A105843 * A346891 A244661 A146137
KEYWORD
base,nonn
AUTHOR
Tanya Khovanova, Aug 28 2007
STATUS
approved

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Last modified July 23 17:14 EDT 2024. Contains 374552 sequences. (Running on oeis4.)