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Search: id:A104266
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| A104266 |
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Largest n-digit square with no zero digits. |
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+0
3
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| 9, 81, 961, 9216, 99856, 978121, 9998244, 99321156, 999887641, 9978811236, 99999515529, 999332111556, 9999995824729, 99978881115136, 999999961946176, 9999333211115556, 99999999356895225, 999978918111112681
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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a(3) = Max{...., 729, 784, 841, 961} = 961.
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MATHEMATICA
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f[n_] := Block[{k = Floor[ Sqrt[10^n]]}, While[ Union[ IntegerDigits[ k^2]][[1]] == 0, k-- ]; k^2]; Table[ f[n], {n, 18}] (from Robert G. Wilson v Mar 03 2005)
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CROSSREFS
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Cf. A104265, A104264, A052041.
Sequence in context: A077486 A113361 A068881 this_sequence A061433 A069659 A110853
Adjacent sequences: A104263 A104264 A104265 this_sequence A104267 A104268 A104269
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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 03 2005
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