Number of fixed-point-free permutation groups of degree n.

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =7a(5) =8a(6) =37a(7) =40a(8) =200a(9) =258a(10) =1039a(11) =1501a(12) =7629a(13) =10109a(14) =54322a(15) =83975a(16) =527036a(17) =780193a(18) =5808293