OFFSET
1,1
COMMENTS
EXAMPLE
Let b(n) = A126706(n).
a(1) = 3 since b(1) = 12 = 2^2 * 3.
a(2) = 3 since b(2) = 18 = 2 * 3^2.
a(3) = 5 since b(3) = 20 = 2^2 * 5, etc.
MATHEMATICA
FactorInteger[#][[2, 1]] & /@ Select[Range[250], PrimeOmega[#] > PrimeNu[#] > 1 &]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Michael De Vlieger, Jan 05 2024
STATUS
approved