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A357785 as a simple table

na(n)
11
21
34
415
565
6291
71356
86474
931555
10156315
11784924
123986534
1320444676
14105728100
15550735400
162886924190
1715217019595
1880600822575
19428766983300
202289637381800
2112268642450420
2265941128441080
23355396218177760
241920215555772550
2510398415258863275

[1,1,4,15,65,291,1356,6474,31555,156315,784924,
 3986534,20444676,105728100,550735400,2886924190,
 15217019595,80600822575,428766983300,
 2289637381800,12268642450420,65941128441080,
 355396218177760,1920215555772550,
 10398415258863275]