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A300870 as a simple table

n a(n)
0 1
1 1
2 7
3 307
4 37537
5 8755561
6 3304572391
7 1847063377867
8 1447456397632897
9 1532041772833285777
10 2130468278450240803591
11 3808068399270998260188451
12 8590473242021318921848038817
13 24074336129439663228349612217977
14 82657249526888437632759608331784807
15 343425012928825298349935150449843384891
16 1707701025594135213863151839769061397729281

[1,1,7,307,37537,8755561,3304572391,1847063377867,
 1447456397632897,1532041772833285777,
 2130468278450240803591,3808068399270998260188451,
 8590473242021318921848038817,
 24074336129439663228349612217977,
 82657249526888437632759608331784807,
 343425012928825298349935150449843384891,
 1707701025594135213863151839769061397729281]

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Last modified December 8 12:07 EST 2019. Contains 329862 sequences. (Running on oeis4.)