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A203559 as a simple table

na(n)
13
29
387
4177
5993
610833
735619
8219873
92083713
108710539
1155644339
12473819481
132320792659
1415120204297
15119105713827
16650725327233
174293779332929
1832065818855387
19188739799967427
201256510215733187
219061494550445907

[3,9,87,177,993,10833,35619,219873,2083713,
 8710539,55644339,473819481,2320792659,15120204297,
 119105713827,650725327233,4293779332929,
 32065818855387,188739799967427,1256510215733187,
 9061494550445907]