Number of aperiodic necklaces of n beads of 2 colors, 10 of them black.

Terms

a(0) =1a(1) =5a(2) =22a(3) =70a(4) =200a(5) =497a(6) =1144a(7) =2424a(8) =4862a(9) =9225a(10) =16796a(11) =29372a(12) =49742a(13) =81686a(14) =130750a(15) =204248a(16) =312455a(17) =468611a(18) =690690a(19) =1001400a(20) =1430715a(21) =2015871a(22) =2804880a(23) =3856528a(24) =5245125a(25) =7060508a(26) =9414328a(27) =12440056a(28) =16301164