A262232 - cp's OEIS frontend

A262232 Number of black and white n-bead necklaces with at least 3 white beads (turning over is not allowed); also number of clockwise arrangements of reflex and non-reflex angles that can form an n-gon.

n	a(n)
0	0
1	0
2	0
3	1
4	2
5	4
6	9
7	15
8	30
9	54
10	101
11	181
12	344
13	624
14	1173
15	2183
16	4106
17	7702
18	14591
19	27585
20	52476
21	99868
22	190733
23	364711
24	699238
25	1342170
26	2581413
27	4971053
28	9587564
29	18512776
30	35792551
31	69273651
32	134219778
33	260301158

[0, 0, 0, 1, 2, 4, 9, 15, 30, 54, 101, 181, 344, 624, 1173, 2183, 4106, 7702, 14591, 27585, 52476, 99868, 190733, 364711, 699238, 1342170, 2581413, 4971053, 9587564, 18512776, 35792551, 69273651, 134219778, 260301158]

cp's OEIS Frontend

A262232 Number of black and white n-bead necklaces with at least 3 white beads (turning over is not allowed); also number of clockwise arrangements of reflex and non-reflex angles that can form an n-gon.

Table of values

List of values