Number of cyclic compositions of 2*n-1 into odd parts.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =10a(5) =19a(6) =41a(7) =94a(8) =211a(9) =493a(10) =1170a(11) =2787a(12) =6713a(13) =16274a(14) =39651a(15) =97109a(16) =238838a(17) =589527a(18) =1459961a(19) =3626242a(20) =9030451a(21) =22542397a(22) =56393862a(23) =141358275a(24) =354975433a(25) =892893262a(26) =2249412291a(27) =5674891017a(28) =14335757586a(29) =36259245523