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A233158 as a simple table

na(n)
1243
21536
315552
4157464
51658232
617587584
7187446312
82000708640
921367730664
10228251103552
112438324338248
1226048163809952
13278268995799144
142972714012485056
1531757156984626632
16339258043287199008

[243,1536,15552,157464,1658232,17587584,187446312,
 2000708640,21367730664,228251103552,2438324338248,
 26048163809952,278268995799144,2972714012485056,
 31757156984626632,339258043287199008]