A056518 - cp's OEIS frontend

A056518 Number of primitive (period n) periodic palindromic structures using exactly two different symbols.

n	a(n)
1	0
2	1
3	1
4	2
5	3
6	4
7	7
8	10
9	14
10	21
11	31
12	42
13	63
14	91
15	123
16	184
17	255
18	371
19	511
20	750
21	1015
22	1519
23	2047
24	3030
25	4092
26	6111
27	8176
28	12222
29	16383
30	24486
31	32767
32	49024
33	65503
34	98175
35	131061
36	196308
37	262143
38	392959
39	524223
40	785910
41	1048575
42	1572256
43	2097151
44	3144702
45	4194162

[0, 1, 1, 2, 3, 4, 7, 10, 14, 21, 31, 42, 63, 91, 123, 184, 255, 371, 511, 750, 1015, 1519, 2047, 3030, 4092, 6111, 8176, 12222, 16383, 24486, 32767, 49024, 65503, 98175, 131061, 196308, 262143, 392959, 524223, 785910, 1048575, 1572256, 2097151, 3144702, 4194162]

cp's OEIS Frontend

A056518 Number of primitive (period n) periodic palindromic structures using exactly two different symbols.

Table of values

List of values