A049019 - cp's OEIS frontend

A049019 Irregular triangle read by rows: Row n gives numbers of preferential arrangements (onto functions) of n objects that are associated with the partition of n, taken in Abramowitz and Stegun order.

n	a(n)
1	1
2	1
3	2
4	1
5	6
6	6
7	1
8	8
9	6
10	36
11	24
12	1
13	10
14	20
15	60
16	90
17	240
18	120
19	1
20	12
21	30
22	20
23	90
24	360
25	90
26	480
27	1080
28	1800
29	720
30	1
31	14
32	42
33	70
34	126
35	630
36	420
37	630
38	840
39	5040
40	2520
41	4200
42	12600
43	15120
44	5040
45	1
46	16
47	56
48	112
49	70
50	168
51	1008
52	1680
53	1260
54	1680
55	1344
56	10080
57	6720

[1, 1, 2, 1, 6, 6, 1, 8, 6, 36, 24, 1, 10, 20, 60, 90, 240, 120, 1, 12, 30, 20, 90, 360, 90, 480, 1080, 1800, 720, 1, 14, 42, 70, 126, 630, 420, 630, 840, 5040, 2520, 4200, 12600, 15120, 5040, 1, 16, 56, 112, 70, 168, 1008, 1680, 1260, 1680, 1344, 10080, 6720]

cp's OEIS Frontend

A049019 Irregular triangle read by rows: Row n gives numbers of preferential arrangements (onto functions) of n objects that are associated with the partition of n, taken in Abramowitz and Stegun order.

Table of values

List of values