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A004352 as a simple table

na(n)
101
1155
121770
1343680
14916895
1517259390
16300500200
174935847320
1877515521435
191174992339235
2017310309456440
21249145778809200
223517322746798575
2348857840214014580
24669413654240461560
259064807833193439800

[1,55,1770,43680,916895,17259390,300500200,
 4935847320,77515521435,1174992339235,
 17310309456440,249145778809200,3517322746798575,
 48857840214014580,669413654240461560,
 9064807833193439800]