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A146962 as a simple table

na(n)
01
15
231
3215
41561
511525
685591
7636935
84743121
935329445
10263175151
111960492055
1214604592681
13108796577765
14810478516711
156037650189575
1644977410078241
17335058747180485
182496016680318271
1918594050606753495

[1,5,31,215,1561,11525,85591,636935,4743121,
 35329445,263175151,1960492055,14604592681,
 108796577765,810478516711,6037650189575,
 44977410078241,335058747180485,2496016680318271,
 18594050606753495]