A216391 - OEIS

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A216391 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	3
7	3
8	3
9	5
10	5
11	5
12	8
13	19
14	21
15	34
16	55
17	81
18	130
19	221
20	407
21	515
22	850
23	1787
24	2287
25	3968
26	8176
27	12332
28	18560
29	36832
30	71375
31	94015
32	173754

[1,1,1,1,2,3,3,3,5,5,5,8,19,21,34,55,81,130,221, 407,515,850,1787,2287,3968,8176,12332,18560,36832, 71375,94015,173754]