A234574 - cp's OEIS frontend

A234574 T(n,k) is the number of size k ordered submultisets of the regular multiset {1_1,1_2,...,1_(n-1),1_n, ... ,i_1,i_2,...,i_(n-1),i_n, ... ,n_1,n_2,...,n_(n-1),n_n} (which contains n copies of i for 1 <= i <= n).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	4
6	6
7	6
8	1
9	3
10	9
11	27
12	78
13	210
14	510
15	1050
16	1680
17	1680
18	1
19	4
20	16
21	64
22	256
23	1020
24	4020
25	15540
26	58380
27	210840
28	722400
29	2310000
30	6745200
31	17417400
32	37837800
33	63063000
34	63063000
35	1
36	5
37	25
38	125
39	625
40	3125
41	15620
42	77980
43	388220
44	1923180
45	9454620

[1, 1, 1, 1, 2, 4, 6, 6, 1, 3, 9, 27, 78, 210, 510, 1050, 1680, 1680, 1, 4, 16, 64, 256, 1020, 4020, 15540, 58380, 210840, 722400, 2310000, 6745200, 17417400, 37837800, 63063000, 63063000, 1, 5, 25, 125, 625, 3125, 15620, 77980, 388220, 1923180, 9454620]

cp's OEIS Frontend

A234574 T(n,k) is the number of size k ordered submultisets of the regular multiset {1_1,1_2,...,1_(n-1),1_n, ... ,i_1,i_2,...,i_(n-1),i_n, ... ,n_1,n_2,...,n_(n-1),n_n} (which contains n copies of i for 1 <= i <= n).

Table of values

List of values