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A102556 as a simple table

na(n)
13
215
3159
4867
519239
6107985
71222563
86965835
9319153335
101835486085
1121185534577
12122622340677
132846090375067
1416550504577861
15192854402926251
161125503935556763
17105252693980913879
18615999836125850637
197219077361263238917
2042347454581722163361
21994637701798929524937

[3,15,159,867,19239,107985,1222563,6965835,
 319153335,1835486085,21185534577,122622340677,
 2846090375067,16550504577861,192854402926251,
 1125503935556763,105252693980913879,
 615999836125850637,7219077361263238917,
 42347454581722163361,994637701798929524937]