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A321470 as a simple table

na(n)
01
11
22
35
416
554
6212
7834
83558
915394
1069512
11313107
121474095
136877031
1432877196

[1,1,2,5,16,54,212,834,3558,15394,69512,313107,
 1474095,6877031,32877196]