A285037 - cp's OEIS frontend

A285037 Irregular triangle read by rows: T(n,k) is the number of primitive (period n) periodic palindromic structures using exactly k different symbols, 1 <= k <= n/2 + 1.

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	0
10	3
11	1
12	0
13	4
14	5
15	1
16	0
17	7
18	6
19	1
20	0
21	10
22	18
23	7
24	1
25	0
26	14
27	25
28	10
29	1
30	0
31	21
32	63
33	43
34	10
35	1
36	0
37	31
38	90
39	65
40	15
41	1
42	0
43	42
44	202
45	219
46	85
47	13
48	1
49	0
50	63
51	301
52	350
53	140
54	21
55	1
56	0
57	91
58	650
59	1058
60	618
61	154
62	17
63	1
64	0
65	123
66	965
67	1701
68	1050
69	266
70	28
71	1

[1, 0, 1, 0, 1, 0, 2, 1, 0, 3, 1, 0, 4, 5, 1, 0, 7, 6, 1, 0, 10, 18, 7, 1, 0, 14, 25, 10, 1, 0, 21, 63, 43, 10, 1, 0, 31, 90, 65, 15, 1, 0, 42, 202, 219, 85, 13, 1, 0, 63, 301, 350, 140, 21, 1, 0, 91, 650, 1058, 618, 154, 17, 1, 0, 123, 965, 1701, 1050, 266, 28, 1]

cp's OEIS Frontend

A285037 Irregular triangle read by rows: T(n,k) is the number of primitive (period n) periodic palindromic structures using exactly k different symbols, 1 <= k <= n/2 + 1.

Table of values

List of values