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A160109
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Numbers n with property that n^2 uses only nonsquare decimal digits (2,3,5,6,7,8).
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1
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5, 6, 15, 16, 24, 25, 26, 75, 76, 85, 94, 165, 166, 184, 194, 235, 256, 275, 475, 476, 485, 515, 516, 525, 526, 535, 594, 606, 615, 725, 734, 744, 765, 766, 816, 826, 856, 874, 875, 876, 885, 915, 924, 925, 934, 1524, 1525, 1526, 1535, 1624, 1635, 1665, 1666
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(n)=sqrt(A077437(n))
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MATHEMATICA
| nsdQ[n_]:=Module[{idn=IntegerDigits[n]}, !MemberQ[idn, 1] && And@@SquareFreeQ/@idn]; Select[Range[2000], nsdQ[#^2]&] [From Harvey P. Dale, Feb. 1, 2011]
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CROSSREFS
| A077437 Squares whose decimal digits are nonsquares (2, 3, 5, 6, 7, 8).
Sequence in context: A145491 A060724 A064949 * A191213 A121847 A030533
Adjacent sequences: A160106 A160107 A160108 * A160110 A160111 A160112
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KEYWORD
| base,nonn
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), May 02 2009
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