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A300920 as a simple table

na(n)
11
240
3290
44066
548588
6640673
78265835
8108469760
91419225976
1018612718736
11243965442778
123199006474569
1341943406467118
14549970038257539
157211211285768759
1694554378260472599
171239807002239604003

[1,40,290,4066,48588,640673,8265835,108469760,
 1419225976,18612718736,243965442778,3199006474569,
 41943406467118,549970038257539,7211211285768759,
 94554378260472599,1239807002239604003]