A153901 - OEIS

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A153901 as a simple table

n	a(n)
0	1
1	2
2	1
3	1
4	3
5	2
6	2
7	7
8	3
9	6
10	15
11	12
12	17
13	63
14	47
15	86
16	272
17	269
18	423
19	2020
20	1609
21	3902
22	14951
23	18193
24	36083
25	200112
26	201396
27	575152
28	2652677
29	3907855
30	9200561

[1,2,1,1,3,2,2,7,3,6,15,12,17,63,47,86,272,269, 423,2020,1609,3902,14951,18193,36083,200112, 201396,575152,2652677,3907855,9200561]