A120260 - OEIS

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A120260 as a simple table

n	a(n)
0	1
1	1
2	2
3	3
4	8
5	24
6	92
7	432
8	2740
9	23822
10	264185
11	3545166
12	59474514
13	1343942004
14	41179884383
15	1593533376361
16	74665098131246
17	4404743069577837
18	351138858279113987
19	37740395752334771775
20	5093113605218543006445

[1,1,2,3,8,24,92,432,2740,23822,264185,3545166, 59474514,1343942004,41179884383,1593533376361, 74665098131246,4404743069577837, 351138858279113987,37740395752334771775, 5093113605218543006445]