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A254781 as a simple table

na(n)
12473062
223633202
3462927268
47597019270
5151619878261
63258176834810
766029963150922
81342750776459233
927898030834172634
10574451492960252732
1111798168038957851746
12242987369752309511703
135004900124524544978144

[2473062,23633202,462927268,7597019270,
 151619878261,3258176834810,66029963150922,
 1342750776459233,27898030834172634,
 574451492960252732,11798168038957851746,
 242987369752309511703,5004900124524544978144]