A120593 - OEIS

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A120593 as a simple table

n	a(n)
0	1
1	1
2	6
3	76
4	1201
5	21252
6	402892
7	8001412
8	164321982
9	3461110532
10	74358814838
11	1623152780808
12	35897318940028
13	802620009567628
14	18112759482614328
15	412020809942451504
16	9437537418826749369
17	217486633306640519124

[1,1,6,76,1201,21252,402892,8001412,164321982, 3461110532,74358814838,1623152780808, 35897318940028,802620009567628,18112759482614328, 412020809942451504,9437537418826749369, 217486633306640519124]