Squarefree kernels of orders of sporadic simple groups.

Terms

a(0) =330a(1) =330a(2) =43890a(3) =2310a(4) =210a(5) =53130a(6) =2310a(7) =9690a(8) =53130a(9) =2310a(10) =3570a(11) =79170a(12) =30030a(13) =1360590a(14) =53130a(15) =53130a(16) =30030a(17) =43890a(18) =177521190a(19) =1607970a(20) =11741730a(21) =690690a(22) =75992317170a(23) =340510170a(24) =325046311590