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A258790 as a simple table

na(n)
01
11
26
348
4411
53765
636308
7363446
83742085
939405777
10422669224
114603472960
1250790334667
13566603884871
146381702580969
1572481863380510
16829331355150992
179551576115706329
18110654552651370400
191288710163262774157
2015080440970246785366
21177237948953055593475

[1,1,6,48,411,3765,36308,363446,3742085,39405777,
 422669224,4603472960,50790334667,566603884871,
 6381702580969,72481863380510,829331355150992,
 9551576115706329,110654552651370400,
 1288710163262774157,15080440970246785366,
 177237948953055593475]