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A291703 as a simple table

na(n)
17
254
3490
44050
532674
6261954
72096770
816776450
9134216194
101073738754
118589928450
1268719464450
13549755789314
144398046461954
1535184371990530
16281474976514050
172251799813292034
1818014398508695554
19144115188074283010
201152921504603701250

[7,54,490,4050,32674,261954,2096770,16776450,
 134216194,1073738754,8589928450,68719464450,
 549755789314,4398046461954,35184371990530,
 281474976514050,2251799813292034,
 18014398508695554,144115188074283010,
 1152921504603701250]