OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = A072486(n) for n < 15.
a(1) = 1; for n > 1, a(n) = a(n-1) * (if n is a prime power p^k then p else 2). - Franklin T. Adams-Watters, Jan 13 2012
MATHEMATICA
a[1]=1; a[n_]:=a[n]=If[LCM[n, a[n-1]]==a[n-1], 2 *a[n-1], LCM[n, a[n-1]]]
CROSSREFS
KEYWORD
nonn
AUTHOR
José María Grau Ribas, Jun 17 2011
EXTENSIONS
a(26)-a(28) from Amiram Eldar, Jun 28 2024
STATUS
approved