a(n) = 10*(n+1)^3*(n+2)*(5*n+7)^2.

Terms

a(0) =980a(1) =34560a(2) =312120a(3) =1548800a(4) =5467500a(5) =15482880a(6) =37565360a(7) =81285120a(8) =161036100a(9) =297440000a(10) =518930280a(11) =863516160a(12) =1380726620a(13) =2133734400a(14) =3201660000a(15) =4682055680a(16) =6693569460a(17) =9378789120a(18) =12907266200a(19) =17478720000a(20) =23326421580a(21) =30720757760a(22) =39972975120a(23) =51439104000