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A171155 as a simple table

na(n)
01
11
23
39
427
583
6259
7817
82599
98323
1026797
1186659
12281287
13915907
142990383
159786369
1632092959
17105435607
18346950321
191143342603
203772698725
2112463525229
2241218894577
23136451431723
24452116980643
251499282161375
264975631425581
2716524213199923
2854913514061867

[1,1,3,9,27,83,259,817,2599,8323,26797,86659,
 281287,915907,2990383,9786369,32092959,105435607,
 346950321,1143342603,3772698725,12463525229,
 41218894577,136451431723,452116980643,
 1499282161375,4975631425581,16524213199923,
 54913514061867]