Coefficient of x in the reduction of the polynomial (2*x + 1)^n by x^3 -> x^2 + x + 1.
A192815
Coefficient of x in the reduction of the polynomial (2*x + 1)^n by x^3 -> x^2 + x + 1.
Terms
- a(0) =0a(1) =2a(2) =4a(3) =14a(4) =72a(5) =346a(6) =1612a(7) =7526a(8) =35216a(9) =164786a(10) =770964a(11) =3606974a(12) =16875480a(13) =78953226a(14) =369388508a(15) =1728211222a(16) =8085563168a(17) =37828901730a(18) =176985297700a(19) =828038725486
External references
- oeis: A192815