For each sequence given below, find a closed formula
for an, the nth term of the sequence (assume the first
terms here are always a0) by relating it to another sequence
for which you already know the formula.
−1,0,7,26,63,124,…
an=(n^3)-1
−1,1,7,17,31,49,…
an=2n^2-1
0,10,30,60,100,150,.....
an=10*((n(n+1))/2)
2,3,6,14,40,152,…
an=
The first three are correct I can't figure out the
last one.