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For each sequence given below, find a closed formula for an, the nth term of the sequence (assume...

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Advance Math

For each sequence given below, find a closed formulafor an, the nth term of the sequence (assume the firstterms here are always a0) by relating it to another sequencefor 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 thelast one.


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