A262467 - OEIS

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A262467 as a simple table

n	a(n)
1	1
2	6
3	36
4	115
5	469
6	2622
7	15732
8	85723
9	494605
10	2942190
11	17653140
12	105022051
13	628157125
14	3765830046
15	22594980276
16	135471987115
17	812624087485
18	4875367337166
19	29252204022996
20	175502212001971
21	1052990612251381

[1,6,36,115,469,2622,15732,85723,494605,2942190, 17653140,105022051,628157125,3765830046, 22594980276,135471987115,812624087485, 4875367337166,29252204022996,175502212001971, 1052990612251381]