Expansion of x*(1+3*x)*(1+6*x+16*x^2)/((1-x)*(1+2*x)*(1-3*x-2*x^2)).
A120723
Expansion of x*(1+3*x)*(1+6*x+16*x^2)/((1-x)*(1+2*x)*(1-3*x-2*x^2)).
Terms
- a(0) =1a(1) =11a(2) =63a(3) =247a(4) =887a(5) =3207a(6) =11383a(7) =40679a(8) =144663a(9) =515719a(10) =1835831a(11) =6540327a(12) =23289943a(13) =82955975a(14) =295436919a(15) =1052244583a(16) =3747563927a(17) =13347268359a(18) =47536758199a(19) =169305160871a(20) =602988299991
External references
- oeis: A120723