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A228768 as a simple table

na(n)
211
311
453
561
6193
7193
8193
9193
1093836531
111963209431
1214322793967831
1314322793967831

[11,11,53,61,193,193,193,193,93836531,1963209431,
 14322793967831,14322793967831]