OFFSET
1,16
EXAMPLE
The prime indices of 378 are {1,2,2,2,4}, so a(378) = floor(5/2) = 2.
MATHEMATICA
Table[Floor[PrimeOmega[n]/2], {n, 100}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Gus Wiseman, Mar 08 2023
STATUS
approved