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A053911 as a simple table

na(n)
11
29
316
4169
5196
6961
769169
869696
99696996
1016966161
11611919169
126661661161
13696199996996
141911961611169
1599191919116196
16116116119966961
17116696699999166169
18699666116199699961
19996111661161199969

[1,9,16,169,196,961,69169,69696,9696996,16966161,
 611919169,6661661161,696199996996,1911961611169,
 99191919116196,116116119966961,116696699999166169,
 699666116199699961,996111661161199969]