[welcher232]

I used the construct that 99.9% of people wouldn't be able to get it.  I could just be way over analyzing,  and looking for a pattern that isn't really there... here goes.

I drop the last digit of each number, and multiply the remaining digit by N.  That number is added to the series N*5.
3=18  (3*1) + (3*5) = 18
4=32  (4*3) + (4*5) = 32
5=50  (5*5) + (5*5) = 50
6=72  (6*7) + (5*6) = 72
7=98  (7*9) + (5*7) = 98
8=168 (8*16) + (5*8) = 168
9=369 (9*36) + (9*5) = 369

Like I said, I was purposefully looking for something that might not even actually be there.

[welcher232]

I used the construct that 99.9% of people wouldn't be able to get it.  I could just be way over analyzing,  and looking for a pattern that isn't really there... here goes.

I drop the last digit of each number, and multiply the remaining digit by N.  That number is added to the series N*5.
3=18  (3*1) + (3*5) = 18
4=32  (4*3) + (4*5) = 32
5=50  (5*5) + (5*5) = 50
6=72  (6*7) + (5*6) = 72
7=98  (7*9) + (5*7) = 98
8=168 (8*16) + (5*8) = 168
9=369 (9*36) + (9*5) = 369

Like I said, I was purposefully looking for something that might not even actually be there.