Partial sums of A006000.

Terms

a(0) =1a(1) =5a(2) =17a(3) =45a(4) =100a(5) =196a(6) =350a(7) =582a(8) =915a(9) =1375a(10) =1991a(11) =2795a(12) =3822a(13) =5110a(14) =6700a(15) =8636a(16) =10965a(17) =13737a(18) =17005a(19) =20825a(20) =25256a(21) =30360a(22) =36202a(23) =42850a(24) =50375a(25) =58851a(26) =68355a(27) =78967a(28) =90770a(29) =103850