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A251359 as a simple table

na(n)
1216
22920
32920
439594
5137642
639594
7536886
86505867
96505867
10536886
117279536
12307396791
131069722970
14307396791
157279536
1698701641
1714522811996
18175856353691
19175856353691
2014522811996
2198701641
221338276196
23686136478104

[216,2920,2920,39594,137642,39594,536886,6505867,
 6505867,536886,7279536,307396791,1069722970,
 307396791,7279536,98701641,14522811996,
 175856353691,175856353691,14522811996,98701641,
 1338276196,686136478104]