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A042551 as a simple table

na(n)
01
12
23
314
431
5572
61175
75272
86447
918166
101023743
112065652
123089395
1314423232
1431935859
15589268694
161210473247
175431161682
186641634929
1918714431540
201054649801169
212128014033878
223182663835047
2314858669374066
2432900002583179
25607058715871288

[1,2,3,14,31,572,1175,5272,6447,18166,1023743,
 2065652,3089395,14423232,31935859,589268694,
 1210473247,5431161682,6641634929,18714431540,
 1054649801169,2128014033878,3182663835047,
 14858669374066,32900002583179,607058715871288]