A330785 - cp's OEIS frontend

A330785 Triangle read by rows where T(n,k) is the number of chains of length k from minimum to maximum in the poset of integer partitions of n ordered by refinement.

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	3
10	2
11	0
12	1
13	5
14	8
15	4
16	0
17	1
18	9
19	25
20	28
21	11
22	0
23	1
24	13
25	57
26	111
27	99
28	33
29	0
30	1
31	20
32	129
33	379
34	561
35	408
36	116
37	0
38	1
39	28
40	253
41	1057
42	2332
43	2805
44	1739
45	435
46	0
47	1
48	40
49	496
50	2833
51	8695
52	15271
53	15373
54	8253
55	1832
56	0
57	1
58	54
59	898
60	6824
61	28071
62	67790
63	98946
64	85870
65	40789
66	8167

[1, 0, 1, 0, 1, 1, 0, 1, 3, 2, 0, 1, 5, 8, 4, 0, 1, 9, 25, 28, 11, 0, 1, 13, 57, 111, 99, 33, 0, 1, 20, 129, 379, 561, 408, 116, 0, 1, 28, 253, 1057, 2332, 2805, 1739, 435, 0, 1, 40, 496, 2833, 8695, 15271, 15373, 8253, 1832, 0, 1, 54, 898, 6824, 28071, 67790, 98946, 85870, 40789, 8167]

cp's OEIS Frontend

A330785 Triangle read by rows where T(n,k) is the number of chains of length k from minimum to maximum in the poset of integer partitions of n ordered by refinement.

Table of values

List of values