Partial sums of A165271.

Terms

a(0) =1a(1) =3a(2) =8a(3) =17a(4) =34a(5) =61a(6) =104a(7) =168a(8) =258a(9) =382a(10) =545a(11) =756a(12) =1017a(13) =1338a(14) =1719a(15) =2165a(16) =2676a(17) =3252a(18) =3890a(19) =4584a(20) =5330a(21) =6116a(22) =6934a(23) =7770a(24) =8614a(25) =9450a(26) =10268a(27) =11054a(28) =11800a(29) =12494