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A155651 as a simple table

na(n)
01
13
229
3297
42801
524993
6215489
71817217
815097601
9124140033
101013275649
118227137537
1266542694401
13536695119873
144319682347009
1534714187104257
16278653866803201
172234873154240513
1817912838552813569
19143505828335845377

[1,3,29,297,2801,24993,215489,1817217,15097601,
 124140033,1013275649,8227137537,66542694401,
 536695119873,4319682347009,34714187104257,
 278653866803201,2234873154240513,
 17912838552813569,143505828335845377]