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A138198 as a simple table

na(n)
02
17
21831
39551
489689
5396733
611981443
770396393
81872851947
910958687879
1047203303159
11767644374817
128817792098461
1378610833115261
14497687231721157
152069461000669981
1622790428875364879
1778944802602538877

[2,7,1831,9551,89689,396733,11981443,70396393,
 1872851947,10958687879,47203303159,767644374817,
 8817792098461,78610833115261,497687231721157,
 2069461000669981,22790428875364879,
 78944802602538877]