Coefficient of x^n in the expansion of ( 1/(1-x) * (1+x^3)^2 )^n.
A370248
Coefficient of x^n in the expansion of ( 1/(1-x) * (1+x^3)^2 )^n.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =16a(4) =67a(5) =276a(6) =1200a(7) =5293a(8) =23427a(9) =104425a(10) =468428a(11) =2110725a(12) =9546256a(13) =43315546a(14) =197088195a(15) =898910916a(16) =4108495491a(17) =18812770011a(18) =86285313327a(19) =396332663094
External references
- oeis: A370248