1, 12, 36, 80, 150, 252.........Please give the next three terms and its generating formula. Thanks for any help.
1, 12, 36, 80, 150, 252, 392, 576, 810..........etc.
If your first term were 2, then either of the following generating functions would work:
a(n) = n^2*(n+1), or
a(n) = n^3 + n^2
You may check carefully to make sure of the first term.
