Column 2 of the array in A107735.

Terms

a(0) =1a(1) =3a(2) =13a(3) =11a(4) =141a(5) =43a(6) =1485a(7) =171a(8) =15565a(9) =683a(10) =163021a(11) =2731a(12) =1707213a(13) =10923a(14) =17878221a(15) =43691a(16) =187223245a(17) =174763a(18) =1960627405a(19) =699051a(20) =20531956941a(21) =2796203a(22) =215013444813a(23) =11184811a(25) =44739243a(27) =178956971a(29) =715827883a(31) =2863311531