A316500 - OEIS

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A316500 as a simple table

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	6
7	11
8	22
9	46
10	96
11	205
12	442
13	976
14	2146
15	4789
16	10719
17	24202
18	54841
19	124967
20	285724
21	656011
22	1510929
23	3491151
24	8088692
25	18790084

[1,1,1,2,3,6,11,22,46,96,205,442,976,2146,4789, 10719,24202,54841,124967,285724,656011,1510929, 3491151,8088692,18790084]