A068634 a(n) = lcm(n, R(n)), where R(n) (A004086) = digit reversal of n.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 84, 403, 574, 255, 976, 1207, 162, 1729, 20, 84, 22, 736, 168, 1300, 806, 216, 1148, 2668, 30, 403, 736, 33, 1462, 1855, 252, 2701, 3154, 1209, 40, 574, 168, 1462, 44, 270, 1472, 3478, 336, 4606, 50, 255, 1300, 1855, 270, 55
Offset: 1
Examples
a(12) = lcm(12,21) = 84.
Links
- Alois P. Heinz, Table of n, a(n) for n = 1..10000
Programs
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Maple
r:= proc(n) local q; `if`(n<10, n, irem(n, 10, 'q') *10^(length(n)-1) +r(q)) end: a:= n-> ilcm(n, r(n)): seq(a(n), n=1..100); # Alois P. Heinz, Aug 16 2012
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Mathematica
Array[LCM[#,FromDigits[Reverse[IntegerDigits[#]]]]&,50] (* Harvey P. Dale, Dec 13 2011 *)
Extensions
More terms from Alois P. Heinz, Aug 16 2012