a(0) = 1 and a(n) = A224704(n) - A224704(n-1).

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =2a(5) =3a(6) =6a(7) =11a(8) =21a(9) =39a(10) =72a(11) =135a(12) =252a(13) =470a(14) =876a(15) =1635a(16) =3051a(17) =5691a(18) =10617a(19) =19808a(20) =36956a(21) =68946a(22) =128628a(23) =239976a(24) =447714a(25) =835278a(26) =1558337a(27) =2907320a(28) =5424056a(29) =10119411