Number of palindromic compositions of n with parts in {1,2,4,6,8,10,...}.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =4a(5) =2a(6) =7a(7) =3a(8) =13a(9) =6a(10) =23a(11) =10a(12) =42a(13) =19a(14) =75a(15) =33a(16) =136a(17) =61a(18) =244a(19) =108a(20) =441a(21) =197a(22) =793a(23) =352a(24) =1431a(25) =638a(26) =2576a(27) =1145a(28) =4645a(29) =2069