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A240366 as a simple table

na(n)
17
243
3257
41693
510997
674255
7492758
83349106
922433886
10152643539
111027272805
126985683412
1347128486230
14320193692690
152163219506254
1614685211888947
1799300200123859
18673693197611946
194558092645337083
2030910190288935629

[7,43,257,1693,10997,74255,492758,3349106,
 22433886,152643539,1027272805,6985683412,
 47128486230,320193692690,2163219506254,
 14685211888947,99300200123859,673693197611946,
 4558092645337083,30910190288935629]