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A130781 as a simple table

na(n)
01
11
22
35
411
522
643
785
8170
9341
10683
111366
122731
135461
1410922
1521845
1643691
1787382
18174763
19349525
20699050
211398101
222796203
235592406
2411184811
2522369621
2644739242
2789478485
28178956971
29357913942
30715827883
311431655765
322863311530

[1,1,2,5,11,22,43,85,170,341,683,1366,2731,5461,
 10922,21845,43691,87382,174763,349525,699050,
 1398101,2796203,5592406,11184811,22369621,
 44739242,89478485,178956971,357913942,715827883,
 1431655765,2863311530]