Denominators in inverse of A128077, numerators = 1.

Terms

a(0) =1a(1) =-4a(2) =4a(3) =-18a(4) =-18a(5) =9a(6) =-48a(7) =-48a(8) =-48a(9) =16a(10) =-100a(11) =-100a(12) =-100a(13) =-100a(14) =25a(15) =-180a(16) =-180a(17) =-180a(18) =-180a(19) =-180a(20) =36a(21) =-294a(22) =-294a(23) =-294a(24) =-294a(25) =-294a(26) =-294a(27) =49