OFFSET
1,2
FORMULA
a(1) = 1, a(n) = if Omega(n)<Omega(a(n-1)) then n*spf(n)^(Omega(a(n-1))-Omega(n)) else n, where spf=A020639 (smallest prime factor).
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Feb 25 2003
STATUS
approved