a(n) = n^9 + 8*n^8 + 43*n^7 + 159*n^6 + 452*n^5 + 997*n^4 + 1725*n^3 + 2272*n^2 + 1990*n + 21.

A270873

a(n) = n^9 + 8*n^8 + 43*n^7 + 159*n^6 + 452*n^5 + 997*n^4 + 1725*n^3 + 2272*n^2 + 1990*n + 21.

Terms

    a(0) =21a(1) =7668a(2) =75545a(3) =545730a(4) =3015021a(5) =13239896a(6) =48243393a(7) =151298070a(8) =420233285a(9) =1056651996a(10) =2446142121a(11) =5282430218a(12) =10751650845a(13) =20796493440a(14) =38483939921a(15) =68504620446a(16) =117836491893a(17) =196610583620a(18) =319221957945a(19) =505734798546a(20) =783636668621

External references