A181980 - OEIS

A181980 as a simple table

n	a(n)
1	2
2	4
3	2
4	6
5	2
6	20
7	20
8	26
9	25
10	10
11	14
12	5
13	373
14	4
15	65
16	232
17	56
18	2
19	521
20	911
21	1156
22	1619
23	647
24	511
25	34
26	2336
27	2123
28	1274
29	2866
30	951
31	2199
32	1353
33	4965
34	7396
35	13513
36	3692
37	14103
38	32275
39	2257
40	86
41	3928
42	2779
43	18781
44	85835
45	820
46	16647
47	2468
48	26677
49	1172
50	38361
51	40842

[2,4,2,6,2,20,20,26,25,10,14,5,373,4,65,232,56,2, 521,911,1156,1619,647,511,34,2336,2123,1274,2866, 951,2199,1353,4965,7396,13513,3692,14103,32275, 2257,86,3928,2779,18781,85835,820,16647,2468, 26677,1172,38361,40842]

[2,4,2,6,2,20,20,26,25,10,14,5,373,4,65,232,56,2,
 521,911,1156,1619,647,511,34,2336,2123,1274,2866,
 951,2199,1353,4965,7396,13513,3692,14103,32275,
 2257,86,3928,2779,18781,85835,820,16647,2468,
 26677,1172,38361,40842]