A143670 - OEIS

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A143670 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	7
9	3
10	1
11	1
12	42
13	26
14	4
15	1
16	1
17	429
18	628
19	70
20	5
21	1
22	1
23	7436
24	41784
25	5102
26	155
27	6
28	1
29	1
30	218348
31	7517457
32	1507128
33	28005

[1,1,1,1,2,1,1,7,3,1,1,42,26,4,1,1,429,628,70,5,1, 1,7436,41784,5102,155,6,1,1,218348,7517457, 1507128,28005]