A055127 - cp's OEIS frontend

A055127 Triangle T(n,k) of numbers of proper k-covers of an unlabeled n-set, k=1..2^n-2.

n	a(n)
2	0
3	1
4	0
5	2
6	5
7	4
8	2
9	1
10	0
11	4
12	19
13	58
14	113
15	168
16	193
17	171
18	119
19	68
20	29
21	10
22	3
23	1
24	0
25	6
26	53
27	325
28	1551
29	6007
30	19533
31	54119
32	128936
33	266085
34	478223
35	751487
36	1035609
37	1254303
38	1336855
39	1254307
40	1035622
41	751526
42	478320
43	266272
44	129226
45	54484
46	19898
47	6297

[0, 1, 0, 2, 5, 4, 2, 1, 0, 4, 19, 58, 113, 168, 193, 171, 119, 68, 29, 10, 3, 1, 0, 6, 53, 325, 1551, 6007, 19533, 54119, 128936, 266085, 478223, 751487, 1035609, 1254303, 1336855, 1254307, 1035622, 751526, 478320, 266272, 129226, 54484, 19898, 6297]

cp's OEIS Frontend

A055127 Triangle T(n,k) of numbers of proper k-covers of an unlabeled n-set, k=1..2^n-2.

Table of values

List of values