Constant term of the reduction of n-th Fibonacci polynomial by x^2 -> x+1. (See Comments.)

Terms

a(0) =1a(1) =0a(2) =2a(3) =1a(4) =6a(5) =7a(6) =22a(7) =36a(8) =89a(9) =168a(10) =377a(11) =756a(12) =1630a(13) =3353a(14) =7110a(15) =14783a(16) =31130a(17) =65016a(18) =136513a(19) =285648a(20) =599041a(21) =1254456a(22) =2629418a(23) =5508097a(24) =11542854a(25) =24183271a(26) =50674318a(27) =106173180a(28) =222470009a(29) =466131960