A165841 - OEIS

A165841 as a simple table

n	a(n)
1	1
2	20
3	20
4	400
5	20
6	400
7	20
8	8000
9	400
10	400
11	20
12	8000
13	20
14	400
15	400
16	160000
17	20
18	8000
19	20
20	8000
21	400
22	400
23	20
24	160000
25	400
26	400
27	8000
28	8000
29	20
30	8000
31	20
32	3200000
33	400
34	400
35	400
36	160000
37	20
38	400
39	400
40	160000
41	20
42	8000
43	20
44	8000
45	8000
46	400
47	20
48	3200000
49	400

[1,20,20,400,20,400,20,8000,400,400,20,8000,20, 400,400,160000,20,8000,20,8000,400,400,20,160000, 400,400,8000,8000,20,8000,20,3200000,400,400,400, 160000,20,400,400,160000,20,8000,20,8000,8000,400, 20,3200000,400]