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A020838 as a simple table

na(n)
01
125
2419
35885
474811
5892605
610199659
7113009005
81223954171
913030808285
10136920690699
111424085096525
1214693717768731
13150657001125565
141537006821834539
1515618310264486445
16158202271944562491

[1,25,419,5885,74811,892605,10199659,113009005,
 1223954171,13030808285,136920690699,1424085096525,
 14693717768731,150657001125565,1537006821834539,
 15618310264486445,158202271944562491]