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A155614 as a simple table

na(n)
01
17
273
3703
46481
558807
6530713
74780783
843040161
9387400807
103486725353
1131380882463
12282429005041
132541864234007
1422876787671993
15205891117745743
161853020145805121
1716677181570526407
18150094634909578633

[1,7,73,703,6481,58807,530713,4780783,43040161,
 387400807,3486725353,31380882463,282429005041,
 2541864234007,22876787671993,205891117745743,
 1853020145805121,16677181570526407,
 150094634909578633]