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A072470 as a simple table

na(n)
00
19
216
3144
47056
517424
6151880976
73370896
811141224704
965067847056
1039037856400
11107295207555600
12189756686048400
133749779657193648400
142631616745340978864144
1515179712895673097530256

[0,9,16,144,7056,17424,151880976,3370896,
 11141224704,65067847056,39037856400,
 107295207555600,189756686048400,
 3749779657193648400,2631616745340978864144,
 15179712895673097530256]