How many Enchne lvl 5 stones need for get one lvl 9?

[dwmedia]

Somebody here some have count about how many enchne lvl 5 stones need to get one lvl 9 stone?

[shadowball2]

16 level 5

[dwmedia]

thx for answer

[Hyorinmaru6]

U need 2 lvl 5 lucky stone to make 1 lvl 6 lucky stone so

here is an easy count down

to make 2 lvl 8 stones u need 4 lvl 7 stones
to make 4 lvl 7 stones u need 8 lvl 6 stones
and to make 8 lvl 6 stones u need 16 lvl 5 stones

easy right

[Arintal]

s = a*2^(n-k)

s = stones of k lvl
n = desired stone level
a = desired amount of stones

s = 1*2^(9-5) = 2^4 = 16