Number of divisors of (n!)^n (A036740).

Terms

a(0) =1a(1) =1a(2) =3a(3) =16a(4) =65a(5) =576a(6) =2275a(7) =27840a(8) =78489a(9) =236800a(10) =767151a(11) =13264560a(12) =31184725a(13) =640564848a(14) =2082421125a(15) =5514535936a(16) =10924376001a(17) =279876280320a(18) =584912713825