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A220877 as a simple table

na(n)
11
25
345
4485
55485
662405
7702445
87770085
984292525
10897101125
119379187885
1296487985125
13978249364205
149787794765765
1596752629782125
16945738292868325

[1,5,45,485,5485,62405,702445,7770085,84292525,
 897101125,9379187885,96487985125,978249364205,
 9787794765765,96752629782125,945738292868325]