Partial sums of A084263.

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =23a(5) =38a(6) =60a(7) =88a(8) =125a(9) =170a(10) =226a(11) =292a(12) =371a(13) =462a(14) =568a(15) =688a(16) =825a(17) =978a(18) =1150a(19) =1340a(20) =1551a(21) =1782a(22) =2036a(23) =2312a(24) =2613a(25) =2938a(26) =3290a(27) =3668a(28) =4075a(29) =4510