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A128847 as a simple table

n a(n)
0 1
1 1
2 2
3 7
4 1304
5 1311
6 2615
7 139906
8 142521
9 424948
10 1417365
11 1842313
12 3259678
13 50737483
14 53997161
15 320723288
16 374720449
17 2569045982
18 100567513747
19 3603437154114739
20 3603537721628486
21 54052965256913543
22 273868364006196201

[1,1,2,7,1304,1311,2615,139906,142521,424948,
 1417365,1842313,3259678,50737483,53997161,
 320723288,374720449,2569045982,100567513747,
 3603437154114739,3603537721628486,
 54052965256913543,273868364006196201]

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Last modified August 10 14:50 EDT 2020. Contains 336381 sequences. (Running on oeis4.)