A143497 - cp's OEIS frontend

A143497 Triangle of unsigned 2-Lah numbers.

n	a(n)
2	1
3	4
4	1
5	20
6	10
7	1
8	120
9	90
10	18
11	1
12	840
13	840
14	252
15	28
16	1
17	6720
18	8400
19	3360
20	560
21	40
22	1
23	60480
24	90720
25	45360
26	10080
27	1080
28	54
29	1
30	604800
31	1058400
32	635040
33	176400
34	25200
35	1890
36	70
37	1
38	6652800
39	13305600
40	9313920
41	3104640
42	554400
43	55440
44	3080
45	88
46	1

[1, 4, 1, 20, 10, 1, 120, 90, 18, 1, 840, 840, 252, 28, 1, 6720, 8400, 3360, 560, 40, 1, 60480, 90720, 45360, 10080, 1080, 54, 1, 604800, 1058400, 635040, 176400, 25200, 1890, 70, 1, 6652800, 13305600, 9313920, 3104640, 554400, 55440, 3080, 88, 1]

cp's OEIS Frontend

A143497 Triangle of unsigned 2-Lah numbers.

Table of values

List of values