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A095249
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Reverse concatenation of first n natural numbers mod forward concatenation of first n natural numbers.
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0
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0, 9, 75, 619, 4941, 37041, 246919, 1234575, 9, 10987654321, 1110987654321, 121110987654321, 775432077543108, 178553219976533007, 27956332009875522906, 3805734210999774512805, 481583522109989673502704
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| a(4) = 619 = 4321 mod 1234.
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MATHEMATICA
| r = f = ""; Do[r = ToString[n] <> r; f = f <> ToString[n]; Print[Mod[ToExpression[r], ToExpression[f]]], {n, 1, 30}] (Propper)
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CROSSREFS
| Sequence in context: A028991 A102094 A125397 * A190983 A136659 A126965
Adjacent sequences: A095246 A095247 A095248 * A095250 A095251 A095252
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 17 2004
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EXTENSIONS
| Corrected and extended by Ryan Propper (rpropper(AT)stanford.edu), Aug 26 2005
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