"EFJ" (unordered, size, labeled) transform of 2,1,1,1,...

Terms

a(0) =1a(1) =2a(2) =1a(3) =7a(4) =9a(5) =21a(6) =148a(7) =281a(8) =997a(9) =3037a(10) =33036a(11) =76275a(12) =352586a(13) =1466713a(14) =6840499a(15) =96591514a(16) =293606525a(17) =1501812845a(18) =7541619580a(19) =45272015807a(20) =252241209910