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A004057 as a simple table

na(n)
01
17
239
3191
4875
53843
616423
768887
8285219
91170059
104768127
1119336863
1278141883
13314953555
141266977751
155089412519
1620422176467
1781882328731
18328110270895
191314184126255
205261965982571
2121063553061987

[1,7,39,191,875,3843,16423,68887,285219,1170059,
 4768127,19336863,78141883,314953555,1266977751,
 5089412519,20422176467,81882328731,328110270895,
 1314184126255,5261965982571,21063553061987]