A084565 - OEIS

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A084565 as a simple table

n	a(n)
1	1
2	1
3	3
4	12
5	79
6	1123
7	42065
8	4880753
9	1674021742
10	1612191702946
11	4291399235883144
12	31570649902282023158
13	644451747846907273827686
14	36675914469877423648734408329
15	5846124500387959287169919356171145

[1,1,3,12,79,1123,42065,4880753,1674021742, 1612191702946,4291399235883144, 31570649902282023158,644451747846907273827686, 36675914469877423648734408329, 5846124500387959287169919356171145]