Partial sums of A253089.

Terms

a(0) =1a(1) =10a(2) =30a(3) =59a(4) =128a(5) =172a(6) =284a(7) =368a(8) =596a(9) =677a(10) =930a(11) =1170a(12) =1531a(13) =1860a(14) =2268a(15) =2704a(16) =3256a(17) =3800a(18) =4456a(19) =5308a(20) =6056a(21) =6808a(22) =7848a(23) =9021a(24) =10118a(25) =11046a(26) =12435a(27) =14292a(28) =15500a(29) =16744