Number of ordered factorizations of n with 3 levels of parentheses.

Terms

a(0) =1a(1) =1a(2) =1a(3) =5a(4) =1a(5) =9a(6) =1a(7) =25a(8) =5a(9) =9a(10) =1a(11) =65a(12) =1a(13) =9a(14) =9a(15) =125a(16) =1a(17) =65a(18) =1a(19) =65a(20) =9a(21) =9a(22) =1a(23) =425a(24) =5a(25) =9a(26) =25a(27) =65a(28) =1a(29) =121