Partial sums of cupolar numbers (1/3)*(n+1)*(5*n^2+7*n+3) (A096000).

Terms

a(0) =1a(1) =11a(2) =48a(3) =140a(4) =325a(5) =651a(6) =1176a(7) =1968a(8) =3105a(9) =4675a(10) =6776a(11) =9516a(12) =13013a(13) =17395a(14) =22800a(15) =29376a(16) =37281a(17) =46683a(18) =57760a(19) =70700a(20) =85701a(21) =102971a(22) =122728a(23) =145200a(24) =170625a(25) =199251a(26) =231336a(27) =267148a(28) =306965a(29) =351075