a(n) = floor( n(n+1)(n+2)(n+3)(n+4) / (n+(n+1)+(n+2)+(n+3)+(n+4)) ).

Terms

a(0) =0a(1) =8a(2) =36a(3) =100a(4) =224a(5) =432a(6) =756a(7) =1232a(8) =1900a(9) =2808a(10) =4004a(11) =5544a(12) =7488a(13) =9900a(14) =12852a(15) =16416a(16) =20672a(17) =25704a(18) =31600a(19) =38456a(20) =46368a(21) =55440a(22) =65780a(23) =77500a(24) =90720a(25) =105560a(26) =122148a(27) =140616a(28) =161100a(29) =183744