Partial sums of A299898.

Terms

a(0) =1a(1) =5a(2) =14a(3) =30a(4) =56a(5) =96a(6) =153a(7) =231a(8) =334a(9) =464a(10) =623a(11) =813a(12) =1037a(13) =1299a(14) =1604a(15) =1957a(16) =2362a(17) =2820a(18) =3331a(19) =3897a(20) =4520a(21) =5205a(22) =5959a(23) =6788a(24) =7695a(25) =8681a(26) =9746a(27) =10889a(28) =12113a(29) =13424