Coefficient of x^n in the expansion of 1 / ( (1-x) * (1-x+x^2) )^(2*n).
A372464
Coefficient of x^n in the expansion of 1 / ( (1-x) * (1-x+x^2) )^(2*n).
Terms
- a(0) =1a(1) =4a(2) =32a(3) =286a(4) =2688a(5) =26004a(6) =256334a(7) =2560352a(8) =25824768a(9) =262447684a(10) =2683152032a(11) =27565067600a(12) =284330359950
External references
- oeis: A372464