When n is 1, the algebra is 6, when n is 2, the algebraic formula is 10, when n is 3, the algebra is 15

Let m = ax & sup2; + BX + C be a quadratic equation of two variables
{6=a+b+c,
10=4a+2b+c,
15=9a+3b+c,
The solution is a = 0.5, B = 2.5, C = 3
So we get the rule: M = 0.5x & sup2; + 2.5x + 3

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