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Search: id:A061363
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| A061363 |
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a(1) = 9; a(n) = least number such that the concatenation a(n)a(n-1)...a(2)a(1) is a square. |
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5
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| 9, 4, 18, 167, 2401, 4086461727, 14079962896835441528, 309880704108832516500624685064706000856, 4681896102766617737298881383797502847166028831212571921983062786215145771871779
(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)a(2)a(1) = 1849 = 43^2, a(4)a(3)a(2)a(1) = 1671849 = 1293^2.
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CROSSREFS
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Cf. A050638, A050639, A061359, A061361.
Sequence in context: A153698 A133597 A075066 this_sequence A100077 A014717 A104728
Adjacent sequences: A061360 A061361 A061362 this_sequence A061364 A061365 A061366
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KEYWORD
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nonn,base
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AUTHOR
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Amarnath_murthy (amarnath_murthy(AT)yahoo.com), Apr 28 2001
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EXTENSIONS
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Corrected by Larry Reeves (larryr(AT)acm.org), May 07 2001
More terms from UlrSchimke(AT)aol.com, Nov 06, 2001
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