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A094168 as a simple table

na(n)
11
27
342
4252
51505
68946
753165
8315980
91878597
1011171930
1166456082
12395399760
132352979538
1414004512886

[1,7,42,252,1505,8946,53165,315980,1878597,
 11171930,66456082,395399760,2352979538,
 14004512886]