MEAN VALUE OF THE ADDITIVE ANALOGUE OF SMARANDACHE FUNCTION

For any positive integer n, let Sdf(n) denotes the Smarandance double factorial
function, then Sdf(n) is defined as least positive integer m such that m!! is
divisible by n. In this paper, we study the mean value properties of the additive
analogue of Sdf(n) and give an interesting mean value formula for it.