Constant term in the reduction of the polynomial (2*x+1)^n by x^3 -> x^2 + x + 1. See Comments.
A192814
Constant term in the reduction of the polynomial (2*x+1)^n by x^3 -> x^2 + x + 1. See Comments.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =9a(4) =49a(5) =225a(6) =1041a(7) =4873a(8) =22817a(9) =106753a(10) =499425a(11) =2336585a(12) =10931921a(13) =51145825a(14) =239289457a(15) =1119533257a(16) =5237818689a(17) =24505519873a(18) =114650876097a(19) =536402551689
External references
- oeis: A192814