Coefficient of x^n in the expansion of ( (1+x)^2 / (1-x^3)^3 )^n.
A370217
Coefficient of x^n in the expansion of ( (1+x)^2 / (1-x^3)^3 )^n.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =29a(4) =166a(5) =927a(6) =5055a(7) =27687a(8) =153702a(9) =861950a(10) =4862481a(11) =27543111a(12) =156571951a(13) =892919445a(14) =5106591405a(15) =29275176204a(16) =168181755750a(17) =967967551701
External references
- oeis: A370217