Number of divisors of 240^n.

Terms

a(0) =1a(1) =20a(2) =81a(3) =208a(4) =425a(5) =756a(6) =1225a(7) =1856a(8) =2673a(9) =3700a(10) =4961a(11) =6480a(12) =8281a(13) =10388a(14) =12825a(15) =15616a(16) =18785a(17) =22356a(18) =26353a(19) =30800a(20) =35721a(21) =41140a(22) =47081a(23) =53568a(24) =60625a(25) =68276a(26) =76545a(27) =85456a(28) =95033a(29) =105300