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A108993 as a simple table

na(n)
01
11
23
319
4205
53276
670852
71953715
865904057
92639266228
10122677374326
116503266277223
12387708627582311
1325700183133977665
141876381387159576676
15149695388098709302361
1612961535832843534300945

[1,1,3,19,205,3276,70852,1953715,65904057,
 2639266228,122677374326,6503266277223,
 387708627582311,25700183133977665,
 1876381387159576676,149695388098709302361,
 12961535832843534300945]