Recip transform of 2*(1 + x^2 + x^5 + x^6)-1/(1-x).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =13a(6) =41a(7) =97a(8) =203a(9) =507a(10) =1671a(11) =5695a(12) =17345a(13) =48107a(14) =133867a(15) =404635a(16) =1301205a(17) =4156061a(18) =12789845a(19) =38604189a(20) =118183255a(21) =371846705a(22) =1185390789a(23) =3757924141a(24) =11797229967a(25) =36991159495a(26) =116904780811a(27) =372629921851