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A308481 as a simple table

n a(n)
1 1
2 1
3 9
4 82
5 1300
6 15626
7 376761
8 6161988
9 176787117
10 3769318700
11 142364319625
12 3152513804548
13 154718778284148
14 4340009120036086
15 210971169748692000
16 7281661100510001416
17 435659030617933827136
18 14181101408561469791694
19 1052864393300587929716721
20 41673894815421072916530408

[1,1,9,82,1300,15626,376761,6161988,176787117,
 3769318700,142364319625,3152513804548,
 154718778284148,4340009120036086,
 210971169748692000,7281661100510001416,
 435659030617933827136,14181101408561469791694,
 1052864393300587929716721,
 41673894815421072916530408]

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Last modified September 24 15:58 EDT 2022. Contains 356943 sequences. (Running on oeis4.)