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Search: id:A067479
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| A067479 |
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Smallest n-digit square starting with 9, or 0 if no such number exists. |
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+0
9
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| 9, 0, 900, 9025, 90000, 900601, 9000000, 90003169, 900000000, 9000127161, 90000000000, 900001331856, 9000000000000, 90000000369889, 900000000000000, 9000000036988900, 90000000000000000, 900000001801523401
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a[n+1]=floor(sqrt(9*10^n))+(n mod 2))^2, a[2]=0 - Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 18 2002
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CROSSREFS
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Cf. A035076 (roots), A045792.
Cf. 2: A067472, 3: A067473, 4: A067474, 5: A067475, 6: A067476, 7: A067477, 8: A067478.
Adjacent sequences: A067476 A067477 A067478 this_sequence A067480 A067481 A067482
Sequence in context: A087094 A013535 A057403 this_sequence A121935 A070060 A102209
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KEYWORD
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base,easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 09 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 18 2002
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