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A231909 as a simple table

na(n)
13
217
3137
4948
56975
650323
7366170
82657785
919313547
10140303704
111019402743
127406378807
1353811580170
14390970164997
152840618194879
1620638678936360
17149951606887643
181089482683574507
197915704422510418
2057512044237312433

[3,17,137,948,6975,50323,366170,2657785,19313547,
 140303704,1019402743,7406378807,53811580170,
 390970164997,2840618194879,20638678936360,
 149951606887643,1089482683574507,7915704422510418,
 57512044237312433]