a(n) = n*(6*n+4).

Terms

a(0) =0a(1) =10a(2) =32a(3) =66a(4) =112a(5) =170a(6) =240a(7) =322a(8) =416a(9) =522a(10) =640a(11) =770a(12) =912a(13) =1066a(14) =1232a(15) =1410a(16) =1600a(17) =1802a(18) =2016a(19) =2242a(20) =2480a(21) =2730a(22) =2992a(23) =3266a(24) =3552a(25) =3850a(26) =4160a(27) =4482a(28) =4816a(29) =5162