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A200796 as a simple table

na(n)
15
2178
39880
4583813
534679839
62060918000
7122478253815
87278777317468
9432571571252989
1025707362563355693
111527766813187552208
1290793889493222901029
135395804057415427972197
14320668071260622898796015

[5,178,9880,583813,34679839,2060918000,
 122478253815,7278777317468,432571571252989,
 25707362563355693,1527766813187552208,
 90793889493222901029,5395804057415427972197,
 320668071260622898796015]