Expansion of (1 + x)/(1 - x^2*(1 + x)^4).

Terms

a(0) =1a(1) =1a(2) =1a(3) =5a(4) =11a(5) =19a(6) =42a(7) =98a(8) =205a(9) =429a(10) =936a(11) =2024a(12) =4316a(13) =9260a(14) =19949a(15) =42841a(16) =91917a(17) =197485a(18) =424331a(19) =911255a(20) =1957086a(21) =4203998a(22) =9029949a(23) =19394681a(24) =41657808a(25) =89478064a(26) =192189304a(27) =412801176a(28) =886657081a(29) =1904452689