a(n) = binomial(5*n+8, 4)/5 for n >= 0.

Terms

a(0) =14a(1) =143a(2) =612a(3) =1771a(4) =4095a(5) =8184a(6) =14763a(7) =24682a(8) =38916a(9) =58565a(10) =84854a(11) =119133a(12) =162877a(13) =217686a(14) =285285a(15) =367524a(16) =466378a(17) =583947a(18) =722456a(19) =884255a(20) =1071819a(21) =1287748a(22) =1534767a(23) =1815726a(24) =2133600a(25) =2491489a(26) =2892618a(27) =3340337a(28) =3838121a(29) =4389570