a(n) = 12*(n+1)*binomial(n+3,9).

Terms

a(0) =84a(1) =960a(2) =5940a(3) =26400a(4) =94380a(5) =288288a(6) =780780a(7) =1921920a(8) =4375800a(9) =9335040a(10) =18845112a(11) =36279360a(12) =67016040a(13) =119380800a(14) =205931880a(15) =345181056a(16) =563861100a(17) =899870400a(18) =1406047500a(19) =2154952800a(20) =3244861620a(21) =4807202400a(22) =7015706100a(23) =10097568000a(24) =14346961200a(25) =20141282304