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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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8
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9, 0, 900, 9025, 90000, 900601, 9000000, 90003169, 900000000, 9000127161, 90000000000, 900001331856, 9000000000000, 90000000369889, 900000000000000, 9000000036988900, 90000000000000000, 900000001801523401
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| 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
| Cf. A035076 (roots), A045792.
Cf. 2: A067472, 3: A067473, 4: A067474, 5: A067475, 6: A067476, 7: A067477, 8: A067478.
Sequence in context: A177145 A178912 A191564 * A166734 A155783 A175764
Adjacent sequences: A067476 A067477 A067478 * A067480 A067481 A067482
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KEYWORD
| base,easy,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 09 2002
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EXTENSIONS
| More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 18 2002
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