Problem of the Week Day 4: Week of 8/20/12 - 8/24/12

Today is day four of the problem of the week. Good luck!

Easy: Solve for the next number n in this sequence:

x, sm^2, t, sgm, b, y, n

n =

Hard: Find the value of n in this sequence:

y, s-1, z, l, n, k-a-5,...

n =