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A264543 as a simple table

na(n)
10
22
316
4216
514852
61994830
7591482528
8510948245264
91135318355003028
106257173857277450930

[0,2,16,216,14852,1994830,591482528,510948245264,
 1135318355003028,6257173857277450930]