Expansion of (1-x)^(-1)/(1-x-2*x^2-x^3).

Terms

a(0) =1a(1) =2a(2) =5a(3) =11a(4) =24a(5) =52a(6) =112a(7) =241a(8) =518a(9) =1113a(10) =2391a(11) =5136a(12) =11032a(13) =23696a(14) =50897a(15) =109322a(16) =234813a(17) =504355a(18) =1083304a(19) =2326828a(20) =4997792a(21) =10734753a(22) =23057166a(23) =49524465a(24) =106373551a(25) =228479648a(26) =490751216a(27) =1054084064a(28) =2264066145a(29) =4862985490