Sums of the products of n consecutive pairs of numbers.

Terms

a(0) =0a(1) =6a(2) =26a(3) =68a(4) =140a(5) =250a(6) =406a(7) =616a(8) =888a(9) =1230a(10) =1650a(11) =2156a(12) =2756a(13) =3458a(14) =4270a(15) =5200a(16) =6256a(17) =7446a(18) =8778a(19) =10260a(20) =11900a(21) =13706a(22) =15686a(23) =17848a(24) =20200a(25) =22750a(26) =25506a(27) =28476a(28) =31668a(29) =35090