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A026388 as a simple table

na(n)
11
25
324
4114
5541
62573
712275
858747
9282003
101357407
116549906
1231675020
13153481299
14745011075
153622111560
1617635418730
1785975792075
18419644943495
192050493623760
2010029194506990
2149098707209695
22240568930012575

[1,5,24,114,541,2573,12275,58747,282003,1357407,
 6549906,31675020,153481299,745011075,3622111560,
 17635418730,85975792075,419644943495,
 2050493623760,10029194506990,49098707209695,
 240568930012575]