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A097172 as a simple table

na(n)
33
44
5185
61026
730457
8362664
910245825
10195060070
115907674201
12153676400076
135199628119985
14169205814335754
156462995557999905
16249877775352089296
1710749867848389013249
18478345428286978038606
1923013713995857481324969

[3,4,185,1026,30457,362664,10245825,195060070,
 5907674201,153676400076,5199628119985,
 169205814335754,6462995557999905,
 249877775352089296,10749867848389013249,
 478345428286978038606,23013713995857481324969]