G.f.: (1+x)^(2*g)*(1+x^3)^(3*g)/((1-x^2)*(1-x^4))-x^(2*g)*(1+x)^4/((1-x^2)*(1-x^4)) for g=3.

Terms

a(0) =1a(1) =6a(2) =16a(3) =35a(4) =86a(5) =182a(6) =317a(7) =558a(8) =975a(9) =1514a(10) =2249a(11) =3366a(12) =4749a(13) =6338a(14) =8417a(15) =10920a(16) =13563a(17) =16538a(18) =19961a(19) =23514a(20) =27123a(21) =30974a(22) =34997a(23) =38994a(24) =42972a(25) =47048a(26) =51197a(27) =55285a(28) =59313a(29) =63408