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A171080 as a simple table

na(n)
01
13
245
3945
414175
5467775
6638512875
71915538625
8488462349375
9194896477400625
1032157918771103125
112218896395206115625
123028793579456347828125
139086380738369043484375
143952575621190533915703125
1528304394023345413370350078125
167217620475953080409439269921875

[1,3,45,945,14175,467775,638512875,1915538625,
 488462349375,194896477400625,32157918771103125,
 2218896395206115625,3028793579456347828125,
 9086380738369043484375,3952575621190533915703125,
 28304394023345413370350078125,
 7217620475953080409439269921875]