Series reversion of x + x^2 - x^5 - x^6 - x^7.

Terms

a(0) =0a(1) =1a(2) =-1a(3) =2a(4) =-5a(5) =15a(6) =-48a(7) =161a(8) =-558a(9) =1985a(10) =-7205a(11) =26577a(12) =-99333a(13) =375366a(14) =-1431740a(15) =5504906a(16) =-21313444a(17) =83023692a(18) =-325152548a(19) =1279534265a(20) =-5056843296a(21) =20062512404a(22) =-79875018700a(23) =319021150220