Coefficient of x in the reduction of the polynomial (x+2)^n by x^3->x^2+x+1.
A192802
Coefficient of x in the reduction of the polynomial (x+2)^n by x^3->x^2+x+1.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =13a(4) =42a(5) =143a(6) =514a(7) =1915a(8) =7268a(9) =27805a(10) =106680a(11) =409633a(12) =1573086a(13) =6040587a(14) =23193782a(15) =89051615a(16) =341901032a(17) =1312664601a(18) =5039704492a(19) =19348873781a(20) =74285859698a(21) =285204660583
External references
- oeis: A192802