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A288970 as a simple table

na(n)
00
10
22
316
4112
5848
67032
764056
8639888
96974928
1082531296
111054724256
1214487894144
13212971227264

[0,0,2,16,112,848,7032,64056,639888,6974928,
 82531296,1054724256,14487894144,212971227264]