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A155612 as a simple table

na(n)
01
15
241
3317
42321
516565
6116921
7821357
85758241
940333925
10282416201
111977149597
1213840755761
1396887416085
14678218289881
154747547161037
1633232887522881
17232630384847045
181628413210489961
1911398894023111677

[1,5,41,317,2321,16565,116921,821357,5758241,
 40333925,282416201,1977149597,13840755761,
 96887416085,678218289881,4747547161037,
 33232887522881,232630384847045,1628413210489961,
 11398894023111677]