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A108404 as a simple table

na(n)
01
14
221
3124
4761
54724
629421
7183404
81143601
97131364
1044471301
11277325404
121729418921
1310784771924
1467254567261
15419404046924
162615432135521
1716310012568004
18101710347053301
19634272638178364
203955367287840601

[1,4,21,124,761,4724,29421,183404,1143601,7131364,
 44471301,277325404,1729418921,10784771924,
 67254567261,419404046924,2615432135521,
 16310012568004,101710347053301,634272638178364,
 3955367287840601]