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A054859 as a simple table

na(n)
01
12
25
341
41151
5311
634421
7218918
83634531
948205429
101798467197
1112941709050
12166400805323
136123584726269

[1,2,5,41,1151,311,34421,218918,3634531,48205429,
 1798467197,12941709050,166400805323,6123584726269]