Number of n-bead necklace structures using a maximum of five different colored beads.

A056293

Number of n-bead necklace structures using a maximum of five different colored beads.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =7a(4) =12a(5) =42a(6) =123a(7) =503a(8) =2008a(9) =8720a(10) =38365a(11) =173609a(12) =792828a(13) =3662924a(14) =17034381a(15) =79703081a(16) =374624254a(17) =1767883444a(18) =8370666417a(19) =39751072847a(20) =189262621864a(21) =903220058756

External references