That does it for sections. Now all that is left is to add just a few more tricks that have showed up in this forum. I will add those up soon, and then the NS Methods will be complete for this year. If you know of anything I am missing, let me know.
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Tricks I will add:
n(n!)+ (n-1)(n-1)!+...+ 1(1!)
(n!-(n-2)!)/(n-1)!
(n!+(n-2)!)/(n-1)!
x^2 - y^2 = a^3, where x,y are triangular #'s
41x44 (where ones add to 5 and 10's are the same)
42x47 (where tens are the same)
(a+b)^2 + b^2 - a^2
n(base b) / (n-1) has remainder of
adding 2 consecutive squares
10a x 9b (where 1# is over 100 and 1# is under 100)
