A360693 - cp's OEIS frontend

A360693 Number T(n,k) of sets of n words of length n over binary alphabet where the first letter occurs k times; triangle T(n,k), n>=0, n-signum(n)<=k<=n*(n-1)+signum(n), read by rows.

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	2
6	3
7	10
8	15
9	15
10	10
11	3
12	4
13	37
14	108
15	228
16	336
17	394
18	336
19	228
20	108
21	37
22	4
23	5
24	101
25	600
26	2150
27	5645
28	11680
29	19752
30	27820
31	32935
32	32935
33	27820
34	19752
35	11680
36	5645
37	2150
38	600
39	101
40	5
41	6
42	226
43	2490
44	14745
45	61770
46	200529
47	535674
48	1211485
49	2368200

[1, 1, 1, 2, 2, 2, 3, 10, 15, 15, 10, 3, 4, 37, 108, 228, 336, 394, 336, 228, 108, 37, 4, 5, 101, 600, 2150, 5645, 11680, 19752, 27820, 32935, 32935, 27820, 19752, 11680, 5645, 2150, 600, 101, 5, 6, 226, 2490, 14745, 61770, 200529, 535674, 1211485, 2368200]

cp's OEIS Frontend

A360693 Number T(n,k) of sets of n words of length n over binary alphabet where the first letter occurs k times; triangle T(n,k), n>=0, n-signum(n)<=k<=n*(n-1)+signum(n), read by rows.

Table of values

List of values