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Search: id:A061110
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| A061110 |
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a(1) = 1; a(n) = smallest number such that the concatenation a(1)a(2)...a(n) is a square. |
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+0
4
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| 1, 6, 9, 744, 41796, 60172924176, 8240010144800000000001, 82400101448000000000020000000000000000000001
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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Amarnath Murthy, Exploring some new ideas on Smarandache type sets, functions and sequences, Smarandache Notions Journal Vol. 11, No. 1-2-3, Spring 2000.
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LINKS
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M. L. Perez et al., eds., Smarandache Notions Journal
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EXAMPLE
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a(1) = 1, a(1)a(2)=16 =4^2, a(1)a(2)a(3)= 169= 13^2, 169744= 412^2.
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CROSSREFS
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Cf. A061109, A051671. The actual squares are in A048557.
Sequence in context: A121233 A156180 A053490 this_sequence A110460 A159190 A004075
Adjacent sequences: A061107 A061108 A061109 this_sequence A061111 A061112 A061113
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 20 2001
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org), Jul 23 2001. The next term is too large to include.
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