G.f. E(x) satisfies: E(x) = (1 + x*E(x))*(1 + 2*x*E(x))*(1 + 3*x*E(x))*(1 + 4*x*E(x)).
A341968
G.f. E(x) satisfies: E(x) = (1 + x*E(x))*(1 + 2*x*E(x))*(1 + 3*x*E(x))*(1 + 4*x*E(x)).
Terms
- a(0) =1a(1) =10a(2) =135a(3) =2100a(4) =35474a(5) =632450a(6) =11712915a(7) =223143700a(8) =4345018254a(9) =86089181860
External references
- oeis: A341968