Partial sums of A051941.

Terms

a(0) =6a(1) =27a(2) =73a(3) =155a(4) =285a(5) =476a(6) =742a(7) =1098a(8) =1560a(9) =2145a(10) =2871a(11) =3757a(12) =4823a(13) =6090a(14) =7580a(15) =9316a(16) =11322a(17) =13623a(18) =16245a(19) =19215a(20) =22561a(21) =26312a(22) =30498a(23) =35150a(24) =40300a(25) =45981a(26) =52227a(27) =59073a(28) =66555a(29) =74710