Number of necklace compositions of n with no part circularly followed by a divisor or a multiple.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =2a(7) =1a(8) =2a(9) =5a(10) =4a(11) =7a(12) =6a(13) =13a(14) =14a(15) =20a(16) =30a(17) =38a(18) =50a(19) =68a(20) =97a(21) =132a(22) =176a(23) =253a(24) =328a(25) =470a(26) =631a(27) =901a(28) =1229a(29) =1709