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A171197 as a simple table

na(n)
01
11
215
3533
436415
54624621
61108685495
7513716588981
8467874135168079
9845152554936920445
103041003426951554000167
1121840734269889733272106629
12313415404907854466274076819391
138990640466019774671530066108827853

[1,1,15,533,36415,4624621,1108685495,513716588981,
 467874135168079,845152554936920445,
 3041003426951554000167,21840734269889733272106629,
 313415404907854466274076819391,
 8990640466019774671530066108827853]