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A259335 as a simple table

na(n)
11
27
361
4611
56686
677729
7944245
811859355
9152893720
102013070126
1126967817306
12366542344117
135043651762826
1470138959074461
15984384594022117
1613927418363218955
17198459156018467084
182845950809029225472
1941044332341739034032
20594983281327999736694

[1,7,61,611,6686,77729,944245,11859355,152893720,
 2013070126,26967817306,366542344117,5043651762826,
 70138959074461,984384594022117,13927418363218955,
 198459156018467084,2845950809029225472,
 41044332341739034032,594983281327999736694]