Coefficient of x^n in the expansion of 1 / (1-x-x^3)^(2*n).
A370626
Coefficient of x^n in the expansion of 1 / (1-x-x^3)^(2*n).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =62a(4) =402a(5) =2662a(6) =17914a(7) =122040a(8) =839154a(9) =5811758a(10) =40482530a(11) =283311470a(12) =1990464450a(13) =14030571258a(14) =99179197512a(15) =702789627712
External references
- oeis: A370626