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A081254 as a simple table

na(n)
11
23
36
413
526
653
7106
8213
9426
10853
111706
123413
136826
1413653
1527306
1654613
17109226
18218453
19436906
20873813
211747626
223495253
236990506
2413981013
2527962026
2655924053
27111848106
28223696213
29447392426
30894784853
311789569706
323579139413

[1,3,6,13,26,53,106,213,426,853,1706,3413,6826,
 13653,27306,54613,109226,218453,436906,873813,
 1747626,3495253,6990506,13981013,27962026,
 55924053,111848106,223696213,447392426,894784853,
 1789569706,3579139413]