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

Terms

a(0) =1a(1) =2a(2) =7a(3) =22a(4) =69a(5) =218a(6) =687a(7) =2166a(8) =6829a(9) =21530a(10) =67879a(11) =214006a(12) =674709a(13) =2127194a(14) =6706527a(15) =21144054a(16) =66662077a(17) =210169370a(18) =662613079a(19) =2089058422a(20) =6586294821a(21) =20764991066a(22) =65466983439a(23) =206401529718a(24) =650733991885