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A184256 as a simple table

na(n)
11
22
33
413
551
6278
71500
87939
941835
10216304
111098036
125469347
1326720527
14128062654
15602383825
162782565907
1712630464094
1856374423419
19247582918975
201070576473665
214560847659120

[1,2,3,13,51,278,1500,7939,41835,216304,1098036,
 5469347,26720527,128062654,602383825,2782565907,
 12630464094,56374423419,247582918975,
 1070576473665,4560847659120]