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A053909
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Squares composed of digits {1,6,8}.
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2
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1, 16, 81, 1681, 11881, 1666681, 818188816, 6168688681, 6661661161, 611686666816, 1111166866161, 11168168618161, 18886681666161, 666868181611681, 866686868686116, 16668111611611681, 668881818661618116
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
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MATHEMATICA
| Flatten[Table[Select[FromDigits/@Tuples[{1, 6, 8}, {n}], IntegerQ[Sqrt[#]]&], {n, 10}]] (* From Harvey P. Dale, Apr 22 2011 *)
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CROSSREFS
| Cf. A053908.
Sequence in context: A046453 A030514 A056571 * A151502 A030693 A159501
Adjacent sequences: A053906 A053907 A053908 * A053910 A053911 A053912
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KEYWORD
| nonn,base
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.
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