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

A056298

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

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =3a(6) =20a(7) =136a(8) =773a(9) =4281a(10) =22430a(11) =115100a(12) =577577a(13) =2863227a(14) =14051164a(15) =68515514a(16) =332514803a(17) =1608800691a(18) =7767857090a(19) =37460388596a(20) =180536313547a(21) =869901397479

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