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A111464 a(1) = 12, a(n+1) = lcm{a(n), Digit Reversal(a(n))}. 0
12, 84, 336, 70896, 1649679024, 2314922791895828688, 36399640682124013852413819710318544, 77273493636380731521261660069550949170528534841641864516576194470832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Next term has 135 digits.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

a(3) = lcm(84,48) = 336.

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); # Emeric Deutsch, Aug 11 2005

MATHEMATICA

NestList[LCM[#, FromDigits[Reverse[IntegerDigits[#]]]]&, 12, 8]  (* Harvey P. Dale, Jan 09 2011 *)

CROSSREFS

Sequence in context: A213784 A085409 A303916 * A341367 A004407 A054849

Adjacent sequences:  A111461 A111462 A111463 * A111465 A111466 A111467

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Aug 04 2005

EXTENSIONS

More terms from Emeric Deutsch, Aug 11 2005

STATUS

approved

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Last modified December 8 09:02 EST 2021. Contains 349594 sequences. (Running on oeis4.)