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A278184 as a simple table

na(n)
10
219
3544
413720
5347116
68803344
7223230876
85660949042
9143557203008
103640498372990
1192320193797850
122341167983288042
1359370190792031534
141505581649925192516
1538180374263992817136
16968224459304580152320

[0,19,544,13720,347116,8803344,223230876,
 5660949042,143557203008,3640498372990,
 92320193797850,2341167983288042,59370190792031534,
 1505581649925192516,38180374263992817136,
 968224459304580152320]