A214310 - cp's OEIS frontend

A214310 a(n) is the number of all three-color bracelets (necklaces with turning over allowed) with n beads and the three colors are from a repertoire of n distinct colors, for n >= 3.

n	a(n)
3	1
4	24
5	180
6	1120
7	5145
8	23016
9	91056
10	357480
11	1327095
12	4893680
13	17525508
14	62254920
15	217457695
16	753332160
17	2581110000
18	8779264032
19	29624681763
20	99350001360
21	331159123260
22	1098168382080
23	3624003213369
24	11908069219816
25	38972450763000
26	127087400895000

[1, 24, 180, 1120, 5145, 23016, 91056, 357480, 1327095, 4893680, 17525508, 62254920, 217457695, 753332160, 2581110000, 8779264032, 29624681763, 99350001360, 331159123260, 1098168382080, 3624003213369, 11908069219816, 38972450763000, 127087400895000]

cp's OEIS Frontend

A214310 a(n) is the number of all three-color bracelets (necklaces with turning over allowed) with n beads and the three colors are from a repertoire of n distinct colors, for n >= 3.

Table of values

List of values