Partial sums of A169707.

Terms

a(0) =1a(1) =6a(2) =15a(3) =36a(4) =61a(5) =98a(6) =155a(7) =240a(8) =329a(9) =430a(10) =551a(11) =700a(12) =869a(13) =1082a(14) =1363a(15) =1704a(16) =2049a(17) =2406a(18) =2783a(19) =3188a(20) =3613a(21) =4082a(22) =4619a(23) =5216a(24) =5833a(25) =6494a(26) =7223a(27) =8028a(28) =8917a(29) =9962