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A047733 as a simple table

na(n)
11
24
325
4213
52131
623729
7283681
83574222
946866712
10634204317
118803501719
12124799484286
131800669899917
1426374204955323
15391331674556361
165872226011836383
1788993282402441857
181360552594176453319

[1,4,25,213,2131,23729,283681,3574222,46866712,
 634204317,8803501719,124799484286,1800669899917,
 26374204955323,391331674556361,5872226011836383,
 88993282402441857,1360552594176453319]