A161492 - cp's OEIS frontend

A161492 Triangle T(n,m) read by rows: the number of skew Ferrers diagrams with area n and m columns.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	4
9	3
10	1
11	1
12	6
13	8
14	4
15	1
16	1
17	9
18	17
19	13
20	5
21	1
22	1
23	12
24	32
25	34
26	19
27	6
28	1
29	1
30	16
31	55
32	78
33	58
34	26
35	7
36	1
37	1
38	20
39	89
40	160
41	154
42	90
43	34
44	8
45	1
46	1
47	25
48	136
49	305
50	365
51	269
52	131
53	43
54	9
55	1
56	1
57	30
58	200
59	544
60	794
61	716
62	433
63	182
64	53
65	10
66	1
67	1
68	36
69	284
70	923
71	1609
72	1741
73	1271
74	657
75	244
76	64
77	11
78	1

[1, 1, 1, 1, 2, 1, 1, 4, 3, 1, 1, 6, 8, 4, 1, 1, 9, 17, 13, 5, 1, 1, 12, 32, 34, 19, 6, 1, 1, 16, 55, 78, 58, 26, 7, 1, 1, 20, 89, 160, 154, 90, 34, 8, 1, 1, 25, 136, 305, 365, 269, 131, 43, 9, 1, 1, 30, 200, 544, 794, 716, 433, 182, 53, 10, 1, 1, 36, 284, 923, 1609, 1741, 1271, 657, 244, 64, 11, 1]

cp's OEIS Frontend

A161492 Triangle T(n,m) read by rows: the number of skew Ferrers diagrams with area n and m columns.

Table of values

List of values