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A156026 as a simple table

na(n)
13
229
322619
4837929
53835259
66377549
716007039
830397349
9147753209
10745720139
11987082979
122439903209
133276517919
144178766089
1511468884079
1658714318139
1772695416559
18418374010739
19788251653689
20829180295189

[3,29,22619,837929,3835259,6377549,16007039,
 30397349,147753209,745720139,987082979,2439903209,
 3276517919,4178766089,11468884079,58714318139,
 72695416559,418374010739,788251653689,
 829180295189]