Number of true-palindromic compositions of n.

Terms

a(0) =1a(1) =2a(2) =2a(3) =4a(4) =4a(5) =8a(6) =8a(7) =16a(8) =16a(9) =31a(10) =32a(11) =62a(12) =63a(13) =124a(14) =126a(15) =248a(16) =252a(17) =496a(18) =504a(19) =991a(20) =1007a(21) =1982a(22) =2013a(23) =3960a(24) =4023a(25) =7914a(26) =8040a(27) =15816a(28) =16068a(29) =31609