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A253469 as a simple table

na(n)
17227096
244464
317000
415680
520000
620864
732000
841600
980000
10124544
11272000
12456320
131040000
141783424
154112000
167091840
1716400000
1828325504
1965552000
20113260160
21262160000
22452998784
231048592000
241811953280
254194320000

[7227096,44464,17000,15680,20000,20864,32000,
 41600,80000,124544,272000,456320,1040000,1783424,
 4112000,7091840,16400000,28325504,65552000,
 113260160,262160000,452998784,1048592000,
 1811953280,4194320000]