Number of cyclic compositions of n into parts >= 2.

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =2a(5) =4a(6) =4a(7) =7a(8) =9a(9) =14a(10) =18a(11) =30a(12) =40a(13) =63a(14) =93a(15) =142a(16) =210a(17) =328a(18) =492a(19) =765a(20) =1169a(21) =1810a(22) =2786a(23) =4340a(24) =6712a(25) =10461a(26) =16273a(27) =25414a(28) =39650a(29) =62074