A049055 - cp's OEIS frontend

A049055 Triangle read by rows, giving T(n,k) = number of k-member minimal ordered covers of a labeled n-set (1 <= k <= n).

n	a(n)
1	1
2	1
3	2
4	1
5	12
6	6
7	1
8	50
9	132
10	24
11	1
12	180
13	1830
14	1560
15	120
16	1
17	602
18	20460
19	60960
20	20520
21	720
22	1
23	1932
24	201726
25	1856400
26	2047920
27	302400
28	5040
29	1
30	6050
31	1832292
32	48550824
33	155801520
34	72586080
35	4979520
36	40320
37	1
38	18660
39	15717750
40	1144994760
41	10006131240
42	13069123200
43	2767474080
44	91082880
45	362880

[1, 1, 2, 1, 12, 6, 1, 50, 132, 24, 1, 180, 1830, 1560, 120, 1, 602, 20460, 60960, 20520, 720, 1, 1932, 201726, 1856400, 2047920, 302400, 5040, 1, 6050, 1832292, 48550824, 155801520, 72586080, 4979520, 40320, 1, 18660, 15717750, 1144994760, 10006131240, 13069123200, 2767474080, 91082880, 362880]

cp's OEIS Frontend

A049055 Triangle read by rows, giving T(n,k) = number of k-member minimal ordered covers of a labeled n-set (1 <= k <= n).

Table of values

List of values