a(n) = Catalan(Fibonacci(n)).A273398a(n) = Catalan(Fibonacci(n)).Terms a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =42a(6) =1430a(7) =742900a(8) =24466267020External referencesoeis: A273398