A326580 - OEIS

A326580 as a simple table

n	a(n)
0	1
1	6
2	30
3	42
4	90
5	66
6	2730
7	30
8	510
9	798
10	2310
11	138
12	13650
13	54
14	870
15	14322
16	5610
17	210
18	1919190
19	78
20	13530
21	1806
22	2070
23	282
24	324870
25	1122
26	1590
27	43890
28	16530
29	354
30	56786730
31	126
32	6630
33	64722
34	690
35	4686
36	140100870
37	150
38	2310
39	3318
40	6210270
41	498
42	57873270
43	174

[1,6,30,42,90,66,2730,30,510,798,2310,138,13650, 54,870,14322,5610,210,1919190,78,13530,1806,2070, 282,324870,1122,1590,43890,16530,354,56786730,126, 6630,64722,690,4686,140100870,150,2310,3318, 6210270,498,57873270,174]