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A280397 as a simple table

na(n)
136
2158
37440
4388686
518736311
6874372050
739877186802
81785907191220
978870855453277
103444569084276494
11149070940550252478
126402525766461308426
13273223888032122659020
1411595632519907543615784
15489776602503009888381042

[36,158,7440,388686,18736311,874372050,
 39877186802,1785907191220,78870855453277,
 3444569084276494,149070940550252478,
 6402525766461308426,273223888032122659020,
 11595632519907543615784,489776602503009888381042]