A240608 - cp's OEIS frontend

A240608 Number A(n,k) of n-length words w over a k-ary alphabet such that w is empty or a prefix z concatenated with letter a_i and i=1 or 0 < #(z,a_{i-1}) >= #(z,a_i), where #(z,a_i) counts the occurrences of the i-th letter in z; square array A(n,k), n>=0, k>=0, read by antidiagonals.

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	1
9	0
10	1
11	1
12	2
13	1
14	0
15	1
16	1
17	2
18	4
19	1
20	0
21	1
22	1
23	2
24	5
25	7
26	1
27	0
28	1
29	1
30	2
31	5
32	13
33	14
34	1
35	0
36	1
37	1
38	2
39	5
40	14
41	35
42	25
43	1
44	0
45	1
46	1
47	2
48	5
49	14
50	45
51	94
52	50
53	1
54	0
55	1
56	1
57	2
58	5
59	14
60	46
61	149
62	254
63	91
64	1
65	0
66	1
67	1
68	2
69	5
70	14
71	46
72	164
73	509
74	688
75	182
76	1
77	0
78	1
79	1
80	2
81	5
82	14
83	46
84	165
85	629
86	1756
87	1872
88	336
89	1
90	0

[1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 2, 1, 0, 1, 1, 2, 4, 1, 0, 1, 1, 2, 5, 7, 1, 0, 1, 1, 2, 5, 13, 14, 1, 0, 1, 1, 2, 5, 14, 35, 25, 1, 0, 1, 1, 2, 5, 14, 45, 94, 50, 1, 0, 1, 1, 2, 5, 14, 46, 149, 254, 91, 1, 0, 1, 1, 2, 5, 14, 46, 164, 509, 688, 182, 1, 0, 1, 1, 2, 5, 14, 46, 165, 629, 1756, 1872, 336, 1, 0]

cp's OEIS Frontend

A240608 Number A(n,k) of n-length words w over a k-ary alphabet such that w is empty or a prefix z concatenated with letter a_i and i=1 or 0 < #(z,a_{i-1}) >= #(z,a_i), where #(z,a_i) counts the occurrences of the i-th letter in z; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

List of values