A217351 - OEIS

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A217351 as a simple table

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	21
7	24
8	27
9	30
10	54
11	70
12	126
13	369
14	435
15	612
16	787
17	1275
18	2155
19	2436
20	5734
21	6016
22	16107
23	25786
24	34266
25	38841
26	45834
27	46584

[1,2,3,4,6,21,24,27,30,54,70,126,369,435,612,787, 1275,2155,2436,5734,6016,16107,25786,34266,38841, 45834,46584]