Multiplicity of the zero at x=1 of the characteristic polynomial P_n^C.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =0a(5) =4a(6) =1a(7) =7a(8) =8a(9) =13a(10) =2a(11) =26a(12) =9a(13) =49a(14) =38a(15) =107a(16) =28a(17) =228a(18) =49a(19) =501a(20) =324a(21) =1101a(22) =258a(23) =2766a(24) =469a(25) =5845a(26) =3790a(27) =13555a(28) =2376a(29) =35624