A110540 - cp's OEIS frontend

A110540 Invertible triangle: T(n,k) = number of k-ary Lyndon words of length n-k+1 with trace 1 modulo k.

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	2
13	3
14	2
15	1
16	0
17	3
18	6
19	5
20	2
21	1
22	0
23	5
24	16
25	16
26	8
27	3
28	1
29	0
30	9
31	39
32	51
33	30
34	12
35	3
36	1
37	0
38	16
39	104
40	170
41	125
42	54
43	16
44	4
45	1
46	0
47	28
48	270
49	585
50	516
51	259
52	84
53	21
54	4
55	1
56	0
57	51
58	729
59	2048
60	2232
61	1296
62	480
63	128
64	27
65	5
66	1
67	0
68	93
69	1960
70	7280
71	9750
72	6665
73	2792
74	819
75	180
76	33
77	5
78	1

[1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 2, 3, 2, 1, 0, 3, 6, 5, 2, 1, 0, 5, 16, 16, 8, 3, 1, 0, 9, 39, 51, 30, 12, 3, 1, 0, 16, 104, 170, 125, 54, 16, 4, 1, 0, 28, 270, 585, 516, 259, 84, 21, 4, 1, 0, 51, 729, 2048, 2232, 1296, 480, 128, 27, 5, 1, 0, 93, 1960, 7280, 9750, 6665, 2792, 819, 180, 33, 5, 1]

cp's OEIS Frontend

A110540 Invertible triangle: T(n,k) = number of k-ary Lyndon words of length n-k+1 with trace 1 modulo k.

Table of values

List of values