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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; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Next term has 135 digits.
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EXAMPLE
| a(3) = LCM (84,48) = 336.
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MAPLE
| 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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MATHEMATICA
| NestList[LCM[#, FromDigits[Reverse[IntegerDigits[#]]]]&, 12, 8] [From Harvey P. Dale, Jan. 9, 2011]
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CROSSREFS
| Sequence in context: A165127 A075476 A085409 * A004407 A054849 A000761
Adjacent sequences: A111461 A111462 A111463 * A111465 A111466 A111467
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 04 2005
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EXTENSIONS
| More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Aug 11 2005
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