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Search: id:A104265
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| A104265 |
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Smallest n-digit square with no zero digits. |
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+0
3
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| 1, 16, 121, 1156, 11236, 111556, 1115136, 11115556, 111112681, 1111155556, 11111478921, 111111555556, 1111118377216, 11111115555556, 111111226346761, 1111111155555556, 11111112515384644, 111111111555555556
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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a(3) = Min{121, 144, 169, 196, ....} = 121.
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MATHEMATICA
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f[n_] := Block[{k = Ceiling[ Sqrt[10^n]]}, While[ Union[ IntegerDigits[ k^2]][[1]] == 0, k++ ]; k^2]; Table[ f[n], {n, 0, 20}] (from Robert G. Wilson v Mar 02 2005)
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CROSSREFS
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Cf. A104266, A104264, A052041.
Adjacent sequences: A104262 A104263 A104264 this_sequence A104266 A104267 A104268
Sequence in context: A081071 A069658 A069667 this_sequence A068880 A053883 A030508
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KEYWORD
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nonn,base
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 26 2005
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 02 2005
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