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A250456 as a simple table

na(n)
1373248
217318918
3772693886
432602562806
51275994883882
648782075567391
71821064698359512
866622768121582144
92411041836414244648
1086445981340311543372
113077820289047843771294
12109070560585937699044788

[373248,17318918,772693886,32602562806,
 1275994883882,48782075567391,1821064698359512,
 66622768121582144,2411041836414244648,
 86445981340311543372,3077820289047843771294,
 109070560585937699044788]