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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A215226 as a simple table

na(n)
17
242
3210
41260
56720
640110
7228480
81338120
97761600
1045291120
11263674950
121537291560

[7,42,210,1260,6720,40110,228480,1338120,7761600,
 45291120,263674950,1537291560]