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A263974 as a simple table

na(n)
10
272
31817
410720
589472
61791696
727783305
8317382472
93783068416
1051756812704
11698792225489
128925688199152
13114042394336256
141490898399253328
1519518200132035505
16253177516072868896
173279883039710140160

[0,72,1817,10720,89472,1791696,27783305,317382472,
 3783068416,51756812704,698792225489,8925688199152,
 114042394336256,1490898399253328,
 19518200132035505,253177516072868896,
 3279883039710140160]