A230927 - OEIS

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A230927 as a simple table

n	a(n)
1	2
2	6
3	102
4	1242
5	98296
6	4092246
7	1088383766
8	159130979900
9	148986525600652
10	76371552378548280
11	250772217069255837720

[2,6,102,1242,98296,4092246,1088383766, 159130979900,148986525600652,76371552378548280, 250772217069255837720]