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A280179 as a simple table

na(n)
115
2656
313720
4202693
52665301
631821879
7359880117
83910652938
941205820599
10424186764568
114286516071132
1242663698232264
13419306557225259
144077141776062489
1539281413060768999
16375445083262145664

[15,656,13720,202693,2665301,31821879,359880117,
 3910652938,41205820599,424186764568,4286516071132,
 42663698232264,419306557225259,4077141776062489,
 39281413060768999,375445083262145664]