A060052 - cp's OEIS frontend

A060052 Triangle read by rows: T(n,k) gives number of r-bicoverings of an n-set with k blocks, n >= 2, k = 3..n+floor(n/2).

n	a(n)
2	1
3	1
4	4
5	0
6	15
7	25
8	3
9	0
10	30
11	222
12	226
13	40
14	0
15	30
16	1230
17	3670
18	2706
19	535
20	15
21	0
22	0
23	5040
24	39900
25	69450
26	40405
27	8141
28	420
29	0
30	0
31	15120
32	345240
33	1254960
34	1498035
35	722275
36	142877
37	9730
38	105
39	0
40	0
41	30240
42	2492280
43	18587520
44	40701780
45	36450820
46	15031204
47	2871240
48	226828
49	5040

[1, 1, 4, 0, 15, 25, 3, 0, 30, 222, 226, 40, 0, 30, 1230, 3670, 2706, 535, 15, 0, 0, 5040, 39900, 69450, 40405, 8141, 420, 0, 0, 15120, 345240, 1254960, 1498035, 722275, 142877, 9730, 105, 0, 0, 30240, 2492280, 18587520, 40701780, 36450820, 15031204, 2871240, 226828, 5040]

cp's OEIS Frontend

A060052 Triangle read by rows: T(n,k) gives number of r-bicoverings of an n-set with k blocks, n >= 2, k = 3..n+floor(n/2).

Table of values

List of values