OFFSET
1,3
COMMENTS
n divided by the largest primorial that divides it.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = n/A053589(n). - Amiram Eldar, Mar 30 2021
Sum_{k=1..n} a(k) ~ c * n^2 / 2, where c = Sum{k>=1} (1-1/prime(k))/(prime(k-1)#)^2 = 0.68986205818209290747..., where prime(k)# = A002110(k). - Amiram Eldar, Dec 25 2023
MATHEMATICA
f[n_] := Block[{m = n, k = 1}, While[ IntegerQ[ m/Prime[k]], m = m/Prime[k]; k++ ]; m]; Table[ f[n], {n, 77}] (* Robert G. Wilson v, Aug 25 2005 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Amarnath Murthy, Aug 21 2005
EXTENSIONS
More terms from Robert G. Wilson v, Aug 25 2005
STATUS
approved