OFFSET
1,2
COMMENTS
a(n) = n iff n is in A006446. - Ivan Neretin, Apr 27 2017
LINKS
Ivan Neretin, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = lcm(n, floor(sqrt(n))) = lcm(n, A000196(n)). - Wesley Ivan Hurt, Apr 15 2014
EXAMPLE
a(18) cannot be 18 because 18 is not a multiple of 4, the largest integer <= sqrt(18).
MAPLE
MATHEMATICA
Table[LCM[n, Floor[Sqrt[n]]], {n, 50}] (* Wesley Ivan Hurt, Apr 15 2014 *)
CROSSREFS
KEYWORD
AUTHOR
J. Lowell, Apr 15 2014
EXTENSIONS
Extended by Wesley Ivan Hurt, Apr 15 2014
STATUS
approved