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A225348 as a simple table

na(n)
18
277
3410
41525
54508
611291
725056
850659
995130
10168289
11283338
12457627
13713374
141078615
151587974
162283803
173217102
184448769
196050622
208106883
2110715232
2213988475
2318055740
2423064277
2529180742
2636593245
2745512628
2856174753
2968841880

[8,77,410,1525,4508,11291,25056,50659,95130,
 168289,283338,457627,713374,1078615,1587974,
 2283803,3217102,4448769,6050622,8106883,10715232,
 13988475,18055740,23064277,29180742,36593245,
 45512628,56174753,68841880]