Coefficient of x in the reduction by (x^3 -> x + 1) of the polynomial F(n+1)*x^n, where F(n)=A000045 (Fibonacci sequence).

A192912

Coefficient of x in the reduction by (x^3 -> x + 1) of the polynomial F(n+1)*x^n, where F(n)=A000045 (Fibonacci sequence).

Terms

    a(0) =0a(1) =1a(2) =0a(3) =3a(4) =10a(5) =24a(6) =78a(7) =231a(8) =680a(9) =2035a(10) =6052a(11) =18000a(12) =53590a(13) =159471a(14) =474580a(15) =1412397a(16) =4203304a(17) =12509144a(18) =37227624a(19) =110790405a(20) =329715412a(21) =981242533a(22) =2920205614a(23) =8690615136a(24) =25863518300a(25) =76970566973a(26) =229066599960a(27) =681708726543

External references