A261780 - OEIS

A261780 as a simple table

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	2
9	0
10	1
11	3
12	7
13	4
14	0
15	1
16	4
17	15
18	24
19	8
20	0
21	1
22	5
23	26
24	73
25	82
26	16
27	0
28	1
29	6
30	40
31	164
32	354
33	280
34	32
35	0
36	1
37	7
38	57
39	310
40	1031
41	1716
42	956
43	64
44	0
45	1
46	8
47	77
48	524
49	2395
50	6480
51	8318
52	3264
53	128
54	0
55	1
56	9
57	100
58	819
59	4803
60	18501
61	40728
62	40320
63	11144
64	256
65	0

[1,1,0,1,1,0,1,2,2,0,1,3,7,4,0,1,4,15,24,8,0,1,5, 26,73,82,16,0,1,6,40,164,354,280,32,0,1,7,57,310, 1031,1716,956,64,0,1,8,77,524,2395,6480,8318,3264, 128,0,1,9,100,819,4803,18501,40728,40320,11144, 256,0]