Multiplicity of the zero at x=1 of the characteristic polynomial P_n^{C0+}.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =3a(5) =5a(6) =5a(7) =8a(8) =9a(9) =14a(10) =16a(11) =26a(12) =31a(13) =49a(14) =64a(15) =99a(16) =133a(17) =209a(18) =291a(19) =455a(20) =657a(21) =1022a(22) =1510a(23) =2359a(24) =3545a(25) =5536a(26) =8442a(27) =13201a(28) =20319a(29) =31836