"CFJ" (necklace, size, labeled) transform of 2,1,1,1...

Terms

a(0) =1a(1) =2a(2) =1a(3) =7a(4) =9a(5) =21a(6) =268a(7) =491a(8) =1893a(9) =5809a(10) =166476a(11) =373275a(12) =1812374a(13) =8077317a(14) =38851660a(15) =1934306029a(16) =5374689421a(17) =30125069097a(18) =152234643292a(19) =991832638619