"BGJ" (reversible, element, labeled) transform of 1,1,1,1...

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =5a(5) =16a(6) =202a(7) =379a(8) =1437a(9) =6304a(10) =166526a(11) =380689a(12) =1849718a(13) =8191561a(14) =54355043a(15) =2427737134a(16) =6797092397a(17) =38187786376a(18) =194330076934