G.f.: square root of weight enumerator of Kerdock code of length 64 (cf. A028238).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =992a(8) =63a(9) =992a(10) =0a(11) =0a(12) =0a(13) =0a(14) =-492032a(15) =-62496a(16) =-986048a(17) =-62496a(18) =-492032a(19) =0a(20) =0a(21) =488095744a(22) =92994048a(23) =1470192608a(24) =186113088a(25) =1470192608a(26) =92994048a(27) =488095744a(28) =-605238722560a(29) =-153750159360