A342240 - cp's OEIS frontend

A342240 Table read by upward antidiagonals: T(n,k) is the number of strings of length k over an n-letter alphabet that have a bifix; n, k >= 1.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	1
7	0
8	3
9	4
10	1
11	0
12	4
13	9
14	10
15	1
16	0
17	5
18	16
19	33
20	20
21	1
22	0
23	6
24	25
25	76
26	99
27	44
28	1
29	0
30	7
31	36
32	145
33	304
34	315
35	88
36	1
37	0
38	8
39	49
40	246
41	725
42	1264
43	945
44	182
45	1
46	0
47	9
48	64
49	385
50	1476
51	3725
52	5056
53	2883
54	364
55	1
56	0
57	10
58	81
59	568
60	2695
61	9036
62	18625
63	20404
64	8649
65	740
66	1

[0, 0, 1, 0, 2, 1, 0, 3, 4, 1, 0, 4, 9, 10, 1, 0, 5, 16, 33, 20, 1, 0, 6, 25, 76, 99, 44, 1, 0, 7, 36, 145, 304, 315, 88, 1, 0, 8, 49, 246, 725, 1264, 945, 182, 1, 0, 9, 64, 385, 1476, 3725, 5056, 2883, 364, 1, 0, 10, 81, 568, 2695, 9036, 18625, 20404, 8649, 740, 1]

cp's OEIS Frontend

A342240 Table read by upward antidiagonals: T(n,k) is the number of strings of length k over an n-letter alphabet that have a bifix; n, k >= 1.

Table of values

List of values