A342237 - cp's OEIS frontend

A342237 Table read by upward antidiagonals: T(n,k) is the number of strings of length k over an n-letter alphabet that begin with a palindrome of two or more letters; n, k >= 1.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	1
7	0
8	3
9	6
10	1
11	0
12	4
13	15
14	14
15	1
16	0
17	5
18	28
19	51
20	30
21	1
22	0
23	6
24	45
25	124
26	165
27	62
28	1
29	0
30	7
31	66
32	245
33	532
34	507
35	126
36	1
37	0
38	8
39	91
40	426
41	1305
42	2164
43	1551
44	254
45	1
46	0
47	9
48	120
49	679
50	2706
51	6605
52	8788
53	4683
54	510
55	1
56	0
57	10
58	153
59	1016
60	5005
61	16386
62	33405
63	35284
64	14127
65	1022
66	1

[0, 0, 1, 0, 2, 1, 0, 3, 6, 1, 0, 4, 15, 14, 1, 0, 5, 28, 51, 30, 1, 0, 6, 45, 124, 165, 62, 1, 0, 7, 66, 245, 532, 507, 126, 1, 0, 8, 91, 426, 1305, 2164, 1551, 254, 1, 0, 9, 120, 679, 2706, 6605, 8788, 4683, 510, 1, 0, 10, 153, 1016, 5005, 16386, 33405, 35284, 14127, 1022, 1]

cp's OEIS Frontend

A342237 Table read by upward antidiagonals: T(n,k) is the number of strings of length k over an n-letter alphabet that begin with a palindrome of two or more letters; n, k >= 1.

Table of values

List of values