A105617 - OEIS

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A105617 as a simple table

n	a(n)
0	1
1	6
2	50
3	522
4	6498
5	93666
6	1532970
7	28079082
8	569212578
9	12655466946
10	306280630890
11	8017054975242
12	225716319717858
13	6802519195684386
14	218521006115328810
15	7454198349649868202
16	269114811307118424738

[1,6,50,522,6498,93666,1532970,28079082,569212578, 12655466946,306280630890,8017054975242, 225716319717858,6802519195684386, 218521006115328810,7454198349649868202, 269114811307118424738]