p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - S - 2 S^2 + S^3.

Terms

a(0) =1a(1) =4a(2) =10a(3) =24a(4) =62a(5) =156a(6) =391a(7) =987a(8) =2484a(9) =6252a(10) =15744a(11) =39636a(12) =99788a(13) =251237a(14) =632525a(15) =1592480a(16) =4009326a(17) =10094104a(18) =25413498a(19) =63982496a(20) =161086011a(21) =405559431a(22) =1021059816a(23) =2570679048a(24) =6472089792a(25) =16294506424a(26) =41023988824a(27) =103284359545a(28) =260034658537a(29) =654678248796