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Search: id:A061359
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| A061359 |
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a(1) = 1; a(n) = least number such that the concatenation a(n)a(n-1)...a(2)a(1) is a square. |
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+0
14
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| 1, 8, 16, 146, 22086, 31071113326, 365107058344463715696, 2684967738644586785227227090233956040549004, 80907988418771619199715882135720689831071883748730720765719471147735010249595097\ 2665
(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)a(2)a(1) = 1681 = 41^2, a(4)a(3)a(2)a(1) = 1461681 = 1209^2.
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CROSSREFS
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Cf. A050634, A050635.
Sequence in context: A083086 A080452 A107906 this_sequence A005445 A132377 A061747
Adjacent sequences: A061356 A061357 A061358 this_sequence A061360 A061361 A061362
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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 and extended by Larry Reeves (larryr(AT)acm.org), May 07 2001
More terms from UlrSchimke(AT)aol.com, Nov 06, 2001
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