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A300504 as a simple table

na(n)
113
26
317
468
5208
61162
74067
820265
988836
10420674
111978897
129427072
1344593246
14212266634
151007469588
164787708514
1722741208745
18108037995177
19513201504833
202438021530346
2111581528859315
2255017874016905
23261360114793701

[13,6,17,68,208,1162,4067,20265,88836,420674,
 1978897,9427072,44593246,212266634,1007469588,
 4787708514,22741208745,108037995177,513201504833,
 2438021530346,11581528859315,55017874016905,
 261360114793701]