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A223463 as a simple table

na(n)
1600
220588
3789796
431075684
51239353252
649754342824
72005957755820
881082814719516
93283105035003140
10133083400954907428
115398712599231655976
12219116134683255389256
138896250767631907738132
14361277018676277740943780

[600,20588,789796,31075684,1239353252,49754342824,
 2005957755820,81082814719516,3283105035003140,
 133083400954907428,5398712599231655976,
 219116134683255389256,8896250767631907738132,
 361277018676277740943780]