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Search: id:A111464
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| A111464 |
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a(1) = 12, a(n+1) = LCM { a(n), Digit Reversal a(n)}. |
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| 12, 84, 336, 70896, 1649679024, 2314922791895828688, 36399640682124013852413819710318544, 77273493636380731521261660069550949170528534841641864516576194470832
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Next term has 135 digits.
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EXAMPLE
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a(3) = LCM (84,48) = 336.
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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[1]:=12: for n from 1 to 8 do a[n+1]:=lcm(a[n], rev(a[n])) od: seq(a[n], n=1..8); (Deutsch)
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CROSSREFS
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Sequence in context: A026949 A075476 A085409 this_sequence A004407 A054849 A000761
Adjacent sequences: A111461 A111462 A111463 this_sequence A111465 A111466 A111467
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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), Aug 04 2005
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Aug 11 2005
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