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Search: id:A109935
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| A109935 |
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Least common multiple of the digit reversals of the first n natural numbers. |
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+0
1
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| 1, 2, 6, 12, 60, 60, 420, 840, 2520, 2520, 27720, 27720, 859320, 35232120, 598946040, 36535708440, 2594035299240, 23346317693160, 303502130011080, 303502130011080, 303502130011080, 303502130011080, 1214008520044320
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(1) to a(12) are the same as in A003418.
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MAPLE
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rev:=proc(n) local nn, nnn: nn:=convert(n, base, 10): add(nn[nops(nn)+1-j]*10^(j-1), j=1..nops(nn)) end: a:=n->lcm(seq(rev(j), j=1..n)): seq(a(n), n=1..27); (Deutsch)
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CROSSREFS
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Sequence in context: A085911 A058312 A003418 this_sequence A065887 A072181 A126915
Adjacent sequences: A109932 A109933 A109934 this_sequence A109936 A109937 A109938
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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), Jul 19 2005
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EXTENSIONS
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Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu) and Erich Friedman (efriedma(AT)stetson.edu), Aug 03 2005
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