OFFSET

1,18

EXAMPLE

The prime factorization of 360 is 2*2*2*3*3*5, with factors greater than the least 3*3*5, so a(360) = 3.

MATHEMATICA

Table[PrimeOmega[n]-If[n==1, 0, FactorInteger[n][[1, 2]]], {n, 30}]

CROSSREFS

KEYWORD

nonn

AUTHOR

Gus Wiseman, May 18 2023

STATUS

approved