Series reversion of x/(1+6x+5x^2).

Terms

a(0) =0a(1) =1a(2) =6a(3) =41a(4) =306a(5) =2426a(6) =20076a(7) =171481a(8) =1500666a(9) =13386206a(10) =121267476a(11) =1112674026a(12) =10318939956a(13) =96572168916a(14) =910896992856