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A268746 as a simple table

na(n)
113
289
3623
44110
526334
6165019
71016807
86183665
937209717
10221970102
111314544140
127737069617
1345297553803
14263980824665
151532201345489
168861529601362
1751088246525260
18293694819166095
191684057081243885

[13,89,623,4110,26334,165019,1016807,6183665,
 37209717,221970102,1314544140,7737069617,
 45297553803,263980824665,1532201345489,
 8861529601362,51088246525260,293694819166095,
 1684057081243885]