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A019521
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Concatenate squares.
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2
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1, 14, 149, 14916, 1491625, 149162536, 14916253649, 1491625364964, 149162536496481, 149162536496481100, 149162536496481100121, 149162536496481100121144, 149162536496481100121144169
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OFFSET
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1,2
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REFERENCES
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S. Smarandoiu, Convergence of Smarandache continued fractions, Abstract 96T-11-195, Abstracts Amer. Math. Soc., 17 (No. 4, 1996), 680.
Y. Guo, M. Le, Smarandache Concatenated Power Decimals and Their Irrationality, Smarandache Notions Journal, Vol. 9, No. 1-2. 1998, 100-102.
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LINKS
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Table of n, a(n) for n=1..13.
Eric Weisstein's World of Mathematics, Consecutive Number Sequences
F. Smarandache, Collected Papers, Vol. II
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FORMULA
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a(n)=a(n-1)*10^floor[1+log10(n^2)]+n^2, with a(1)=1 - Paolo P. Lava, Jun 20 2008
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MAPLE
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P:=proc(i) local a, n; a:=1; for n from 2 by 1 to i do a:=a*10^floor(evalf(1+log10(n^2), 1000))+n^2; print(a); od; end: P(100); - Paolo P. Lava, Jun 20 2008
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CROSSREFS
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Sequence in context: A081184 A032343 A222614 * A009614 A009802 A153598
Adjacent sequences: A019518 A019519 A019520 * A019522 A019523 A019524
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KEYWORD
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base,nonn
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AUTHOR
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R. Muller
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STATUS
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approved
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