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A159331 as a simple table

na(n)
02
14
29
323
455
5126
6293
7680
81581
93676
108546
1119867
1246185
13107367
14249598
15580245
161348906
173135826
187289911
1916946987
2039396965
2191586832
22212913553
23494963960
241150651606
252674940451
266218482101
2714456217007
2833606627270

[2,4,9,23,55,126,293,680,1581,3676,8546,19867,
 46185,107367,249598,580245,1348906,3135826,
 7289911,16946987,39396965,91586832,212913553,
 494963960,1150651606,2674940451,6218482101,
 14456217007,33606627270]