A342239 - cp's OEIS frontend

A342239 Table read by upward antidiagonals: T(n,k) is the number of strings of length k over an n-letter alphabet that are bifix free; n >= 1, k >= 1.

n	a(n)
1	1
2	2
3	0
4	3
5	2
6	0
7	4
8	6
9	4
10	0
11	5
12	12
13	18
14	6
15	0
16	6
17	20
18	48
19	48
20	12
21	0
22	7
23	30
24	100
25	180
26	144
27	20
28	0
29	8
30	42
31	180
32	480
33	720
34	414
35	40
36	0
37	9
38	56
39	294
40	1050
41	2400
42	2832
43	1242
44	74
45	0
46	10
47	72
48	448
49	2016
50	6300
51	11900
52	11328
53	3678
54	148
55	0
56	11
57	90
58	648
59	3528
60	14112
61	37620
62	59500
63	45132
64	11034
65	284
66	0

[1, 2, 0, 3, 2, 0, 4, 6, 4, 0, 5, 12, 18, 6, 0, 6, 20, 48, 48, 12, 0, 7, 30, 100, 180, 144, 20, 0, 8, 42, 180, 480, 720, 414, 40, 0, 9, 56, 294, 1050, 2400, 2832, 1242, 74, 0, 10, 72, 448, 2016, 6300, 11900, 11328, 3678, 148, 0, 11, 90, 648, 3528, 14112, 37620, 59500, 45132, 11034, 284, 0]

cp's OEIS Frontend

A342239 Table read by upward antidiagonals: T(n,k) is the number of strings of length k over an n-letter alphabet that are bifix free; n >= 1, k >= 1.

Table of values

List of values