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

A156505 as a simple table

na(n)
22
322
4276
56030
6711944
7541412940
83816643437740
985769714419958096

[2,22,276,6030,711944,541412940,3816643437740,
 85769714419958096]