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A261841 as a simple table

na(n)
01
13
26
346
475
5231
61414
72376
85985
914151
1089454
11135330
12343677
13697017
141657212
159439826
1614381055
1733119667
1866361286
19141451860
20283907499
211642516411
222346737106
235367877296
2410093521943
2520923900623
2638428831710
2780538197724
28416229711735

[1,3,6,46,75,231,1414,2376,5985,14151,89454,
 135330,343677,697017,1657212,9439826,14381055,
 33119667,66361286,141451860,283907499,1642516411,
 2346737106,5367877296,10093521943,20923900623,
 38428831710,80538197724,416229711735]