Partial sums of A299277.

Terms

a(0) =1a(1) =6a(2) =19a(3) =45a(4) =91a(5) =164a(6) =268a(7) =408a(8) =595a(9) =835a(10) =1127a(11) =1479a(12) =1896a(13) =2378a(14) =2945a(15) =3605a(16) =4345a(17) =5183a(18) =6127a(19) =7158a(20) =8308a(21) =9598a(22) =10997a(23) =12528a(24) =14205a(25) =15992a(26) =17936a(27) =20066a(28) =22327a(29) =24758