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A279581 as a simple table

na(n)
10
24
336
4304
52212
615428
7103648
8680052
94380964
1027829504
11174806900
121087994628
136720111376
1441240210276
15251687871332
161528700226512
179246173840644
1855718099241732
19334660112687936
202004174865390100

[0,4,36,304,2212,15428,103648,680052,4380964,
 27829504,174806900,1087994628,6720111376,
 41240210276,251687871332,1528700226512,
 9246173840644,55718099241732,334660112687936,
 2004174865390100]