Number of compositions of n that are anti-palindromic modulo 2.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =7a(6) =11a(7) =17a(8) =33a(9) =49a(10) =89a(11) =147a(12) =243a(13) =423a(14) =691a(15) =1185a(16) =1985a(17) =3329a(18) =5649a(19) =9443a(20) =15971a(21) =26855a(22) =45179a(23) =76209a(24) =128097a(25) =215921a(26) =363433a(27) =611827a(28) =1030611a(29) =1734599