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A198856 as a simple table

na(n)
08
171
2575
34607
436863
5294911
62359295
718874367
8150994943
91207959551
109663676415
1177309411327
12618475290623
134947802324991
1439582418599935
15316659348799487
162533274790395903
1720266198323167231
18162129586585337855

[8,71,575,4607,36863,294911,2359295,18874367,
 150994943,1207959551,9663676415,77309411327,
 618475290623,4947802324991,39582418599935,
 316659348799487,2533274790395903,
 20266198323167231,162129586585337855]