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A074841 as a simple table

na(n)
18
277
35711
49797
577327
6997997
78053139
860755907
962996069
1099979997
119999799997
1271515443427
1376933604839
1493445113269
15999997999997

[8,77,5711,9797,77327,997997,8053139,60755907,
 62996069,99979997,9999799997,71515443427,
 76933604839,93445113269,999997999997]