Partials sums of A090615.

Terms

a(0) =1264460a(1) =3379784a(2) =6164364a(3) =11102500a(4) =18271604a(5) =36320580a(6) =54976960a(7) =83135125a(8) =129857825a(9) =210986457a(10) =385264277a(11) =594788487a(12) =924792067a(13) =1423007483a(14) =2659409715a(15) =4458691045a(16) =6846467595a(17) =9563962830a(18) =12443660134a(19) =16149431959