Product of n with sum of next n consecutive integers.

Terms

a(0) =2a(1) =14a(2) =45a(3) =104a(4) =200a(5) =342a(6) =539a(7) =800a(8) =1134a(9) =1550a(10) =2057a(11) =2664a(12) =3380a(13) =4214a(14) =5175a(15) =6272a(16) =7514a(17) =8910a(18) =10469a(19) =12200a(20) =14112a(21) =16214a(22) =18515a(23) =21024a(24) =23750a(25) =26702a(26) =29889a(27) =33320a(28) =37004a(29) =40950