A141382 - OEIS

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A141382 as a simple table

n	a(n)
1	1
2	1
3	6
4	58
5	702
6	9830
7	152632
8	2565042
9	45938878
10	867667140
11	17154629472
12	353091007048
13	7534733877540
14	166160874412976
15	3777158124019664
16	88326122515058436
17	2121170864722835600
18	52242518805270485716

[1,1,6,58,702,9830,152632,2565042,45938878, 867667140,17154629472,353091007048,7534733877540, 166160874412976,3777158124019664, 88326122515058436,2121170864722835600, 52242518805270485716]