A182930 - cp's OEIS frontend

A182930 Triangle read by rows: Number of set partitions of {1,2,..,n} such that |k| is a block and no block |m| with m < k exists, (1 <= n, 1 <= k <= n).

n	a(n)
1	1
2	1
3	0
4	2
5	1
6	1
7	5
8	3
9	2
10	1
11	15
12	10
13	7
14	5
15	4
16	52
17	37
18	27
19	20
20	15
21	11
22	203
23	151
24	114
25	87
26	67
27	52
28	41
29	877
30	674
31	523
32	409
33	322
34	255
35	203
36	162
37	4140
38	3263
39	2589
40	2066
41	1657
42	1335
43	1080
44	877
45	715
46	21147
47	17007
48	13744
49	11155
50	9089
51	7432
52	6097
53	5017
54	4140
55	3425

[1, 1, 0, 2, 1, 1, 5, 3, 2, 1, 15, 10, 7, 5, 4, 52, 37, 27, 20, 15, 11, 203, 151, 114, 87, 67, 52, 41, 877, 674, 523, 409, 322, 255, 203, 162, 4140, 3263, 2589, 2066, 1657, 1335, 1080, 877, 715, 21147, 17007, 13744, 11155, 9089, 7432, 6097, 5017, 4140, 3425]

cp's OEIS Frontend

A182930 Triangle read by rows: Number of set partitions of {1,2,..,n} such that |k| is a block and no block |m| with m < k exists, (1 <= n, 1 <= k <= n).

Table of values

List of values