a(n) = (n^6 - 126*n^5 + 6217*n^4 - 153066*n^3 + 1987786*n^2 - 13055316*n + 34747236)/36.

Terms

a(0) =965201a(1) =653687a(2) =429409a(3) =272563a(4) =166693a(5) =98321a(6) =56597a(7) =32969a(8) =20873a(9) =15443a(10) =13241a(11) =12007a(12) =10429a(13) =7933a(14) =4493a(15) =461a(16) =-3583a(17) =-6961a(18) =-9007a(19) =-9157a(20) =-7019a(21) =-2423a(22) =4549a(23) =13553a(24) =23993a(25) =35051a(26) =45737a(27) =54959a(28) =61613a(29) =64693