Let the series be 121+12+221+2+12+22+321+2+3+…. Then (where Tn and Sn denote the nth term and sum upto nth term respectively.)
If nth term of the series 1 + 5 + 12 + 22 + 35 .........can be written as Tn = an2 + bn + c Find the sum of the 16 terms of the series.