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Search: id:A038397
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| A038397 |
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Concatenate first n squares in reverse order. |
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+0
12
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| 1, 41, 941, 16941, 2516941, 362516941, 49362516941, 6449362516941, 816449362516941, 100816449362516941, 121100816449362516941, 144121100816449362516941
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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M. Bencze, L.Tutescu, Some Notions and Questions in Number Theory, Sequence 5.
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LINKS
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M. L. Perez et al., eds., Smarandache Notions Journal
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FORMULA
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a(n)=(n^2)*10^floor{1+log10[a(n-1)]}+a(n-1), with a(1)=1 - Paolo P. Lava (ppl(AT)spl.at), Jun 20 2008
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MAPLE
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P:=proc(i) local a, n; a:=1; print(1); for n from 2 by 1 to i do a:=n^2*10^floor(evalf(1+log10(a), 1000))+a; print(a); od; end: P(100); - Paolo P. Lava (ppl(AT)spl.at), Jun 20 2008
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CROSSREFS
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Sequence in context: A010993 A090836 A114529 this_sequence A104349 A091314 A059762
Adjacent sequences: A038394 A038395 A038396 this_sequence A038398 A038399 A038400
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KEYWORD
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nonn
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AUTHOR
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M.I.Petrescu (mipetrescu(AT)yahoo.com)
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