A056857 - cp's OEIS frontend

A056857 Triangle read by rows: T(n,c) = number of successive equalities in set partitions of n.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	5
8	6
9	3
10	1
11	15
12	20
13	12
14	4
15	1
16	52
17	75
18	50
19	20
20	5
21	1
22	203
23	312
24	225
25	100
26	30
27	6
28	1
29	877
30	1421
31	1092
32	525
33	175
34	42
35	7
36	1
37	4140
38	7016
39	5684
40	2912
41	1050
42	280
43	56
44	8
45	1
46	21147
47	37260
48	31572
49	17052
50	6552
51	1890
52	420
53	72
54	9
55	1
56	115975
57	211470
58	186300
59	105240
60	42630
61	13104
62	3150
63	600
64	90
65	10
66	1

[1, 1, 1, 2, 2, 1, 5, 6, 3, 1, 15, 20, 12, 4, 1, 52, 75, 50, 20, 5, 1, 203, 312, 225, 100, 30, 6, 1, 877, 1421, 1092, 525, 175, 42, 7, 1, 4140, 7016, 5684, 2912, 1050, 280, 56, 8, 1, 21147, 37260, 31572, 17052, 6552, 1890, 420, 72, 9, 1, 115975, 211470, 186300, 105240, 42630, 13104, 3150, 600, 90, 10, 1]

cp's OEIS Frontend

A056857 Triangle read by rows: T(n,c) = number of successive equalities in set partitions of n.

Table of values

List of values