A153637 - OEIS

A153637 as a simple table

n	a(n)
1	2
2	9
3	9
4	2
5	212
6	2
7	2
8	1618
9	1618
10	2
11	2
12	2100
13	54116
14	2100
15	2
16	2
17	2786
18	609572
19	609572
20	2786
21	2
22	2
23	3712
24	1582558
25	26220736
26	1582558
27	3712
28	2
29	2
30	4914
31	3257870
32	393546494
33	393546494
34	3257870
35	4914
36	2
37	2
38	6428
39	6069056
40	1593218212
41	20609969404

[2,9,9,2,212,2,2,1618,1618,2,2,2100,54116,2100,2, 2,2786,609572,609572,2786,2,2,3712,1582558, 26220736,1582558,3712,2,2,4914,3257870,393546494, 393546494,3257870,4914,2,2,6428,6069056, 1593218212,20609969404]