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A152501 as a simple table

na(n)
10
20
346
422615
55036741
6819235874
7114962084772
814974498962192
91876234090571968
10230313563301166336
1127966954502164518912
123376705184454377873408
13406486565581361073979392
1448857132166440216820449280
155867654791849010140880306176
16704409107074292841154786361344

[0,0,46,22615,5036741,819235874,114962084772,
 14974498962192,1876234090571968,
 230313563301166336,27966954502164518912,
 3376705184454377873408,406486565581361073979392,
 48857132166440216820449280,
 5867654791849010140880306176,
 704409107074292841154786361344]