Coefficient of x in the reduction of the polynomial (x^2 + x + 1)^n by x^3 -> x^2 + x + 1.
A192807
Coefficient of x in the reduction of the polynomial (x^2 + x + 1)^n by x^3 -> x^2 + x + 1.
Terms
- a(0) =0a(1) =1a(2) =6a(3) =37a(4) =230a(5) =1431a(6) =8904a(7) =55403a(8) =344732a(9) =2145013a(10) =13346834a(11) =83047505a(12) =516743378a(13) =3215312955a(14) =20006521300a(15) =124485827703a(16) =774583500376
External references
- oeis: A192807