Number of squares that divide 1!*2!*3!*...*n!.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =10a(5) =42a(6) =72a(7) =360a(8) =672a(9) =2160a(10) =3960a(11) =19488a(12) =30464a(13) =177840a(14) =356400a(15) =1201200a(16) =2096640a(17) =10967040a(18) =17510400a(19) =121176000a(20) =193564800a(21) =783455904a(22) =1324670976a(23) =8010737280a(24) =13121514000a(25) =50323046400a(26) =88690140000a(27) =274271961600a(28) =444141105408