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A183401 as a simple table

na(n)
116
218
3110
41152
58366
672962
7592416
84948658
941522206
10347213952
112919358170
1224526252242
13206222293760
141734866624642
1514595269926750
16122816323809792
171033547558771630
188698080884070050
1973204345173096240
20616106711205094050

[16,18,110,1152,8366,72962,592416,4948658,
 41522206,347213952,2919358170,24526252242,
 206222293760,1734866624642,14595269926750,
 122816323809792,1033547558771630,8698080884070050,
 73204345173096240,616106711205094050]