A211910 - OEIS

A211910 as a simple table

n	a(n)
1	0
2	0
3	2
4	0
5	2
6	10
7	0
8	0
9	30
10	34
11	0
12	0
13	41
14	418
15	86
16	0
17	0
18	42
19	2385
20	3006
21	181
22	0
23	0
24	42
25	6927
26	55822
27	14201
28	337
29	0
30	0
31	0
32	11296
33	605769
34	637721
35	51157
36	575
37	0
38	0
39	0
40	12732
41	3997836
42	18239150
43	4639742
44	152650
45	919
46	0
47	0
48	0
49	12839
50	16321156
51	350026718
52	281228042

[0,0,2,0,2,10,0,0,30,34,0,0,41,418,86,0,0,42,2385, 3006,181,0,0,42,6927,55822,14201,337,0,0,0,11296, 605769,637721,51157,575,0,0,0,12732,3997836, 18239150,4639742,152650,919,0,0,0,12839,16321156, 350026718,281228042]