Number of non-unitary square divisors of n!.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =1a(6) =2a(7) =2a(8) =6a(9) =10a(10) =22a(11) =22a(12) =32a(13) =32a(14) =68a(15) =92a(16) =124a(17) =124a(18) =172a(19) =172a(20) =284a(21) =296a(22) =596a(23) =596a(24) =848a(25) =1136a(26) =2288a(27) =2680a(28) =4352a(29) =4352