a(n) = dot_product(1,2,...,n)*(4,5,...,n,1,2,3).

Terms

a(0) =24a(1) =40a(2) =64a(3) =98a(4) =144a(5) =204a(6) =280a(7) =374a(8) =488a(9) =624a(10) =784a(11) =970a(12) =1184a(13) =1428a(14) =1704a(15) =2014a(16) =2360a(17) =2744a(18) =3168a(19) =3634a(20) =4144a(21) =4700a(22) =5304a(23) =5958a(24) =6664a(25) =7424a(26) =8240a(27) =9114a(28) =10048a(29) =11044