Greatest cube that divides n!.

Terms

a(0) =1a(1) =1a(2) =1a(3) =8a(4) =8a(5) =8a(6) =8a(7) =64a(8) =1728a(9) =1728a(10) =1728a(11) =13824a(12) =13824a(13) =13824a(14) =46656000a(15) =2985984000a(16) =2985984000a(17) =2985984000a(18) =2985984000a(19) =23887872000