Number of compositions of n that can be rearranged into a palindrome.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =6a(5) =8a(6) =18a(7) =26a(8) =56a(9) =90a(10) =202a(11) =320a(12) =730a(13) =1154a(14) =2592a(15) =4130a(16) =9522a(17) =15208a(18) =35330a(19) =56746a(20) =131352a(21) =212074a(22) =492570a(23) =795920a(24) =1855706a(25) =3006482a(26) =7016464a(27) =11406930a(28) =26635154a(29) =43409752