Coefficient of x^2 in the reduction of the n-th Fibonacci polynomial by x^3->x^2+x+1. See Comments.
A192651
Coefficient of x^2 in the reduction of the n-th Fibonacci polynomial by x^3->x^2+x+1. See Comments.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =5a(5) =8a(6) =23a(7) =47a(8) =113a(9) =252a(10) =578a(11) =1316a(12) =2994a(13) =6832a(14) =15545a(15) =35445a(16) =80711a(17) =183928a(18) =418973a(19) =954571a(20) =2174681a(21) =4954436a(22) =11287336a(23) =25715016a(24) =58584744a(25) =133468980a(26) =304072713a(27) =692745597a(28) =1578230845a(29) =3595564360
External references
- oeis: A192651