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A293798 as a simple table

na(n)
31
44
517
658
7193
8603
91852
105539
1116391
1247919
13139258
14402365
151159175
163330974
179561080
1827421882
1978642072
20225566206
21647308614
221858741431
235341591906
2415363474607
2544228744168
26127444421304
27367573522408
281061131077602
293066124030310
308867379519154

[1,4,17,58,193,603,1852,5539,16391,47919,139258,
 402365,1159175,3330974,9561080,27421882,78642072,
 225566206,647308614,1858741431,5341591906,
 15363474607,44228744168,127444421304,367573522408,
 1061131077602,3066124030310,8867379519154]