Number of primitive (period n) bracelet structures using a maximum of five different colored beads.

A056364

Number of primitive (period n) bracelet structures using a maximum of five different colored beads.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =11a(6) =32a(7) =88a(8) =315a(9) =1134a(10) =4691a(11) =19838a(12) =88467a(13) =399679a(14) =1839857a(15) =8533474a(16) =39893579a(17) =187393549a(18) =884152226a(19) =4185740194a(20) =19876589828a(21) =94633345517a(22) =451615299593

External references