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A041828 as a simple table

na(n)
020
121
2125
3146
45965
56111
636520
742631
81741760
91784391
1010663715
1112448106
12508587955
13521036061
143113768260
153634804321
16148505941100
17152140745421
18909209668205
191061350413626
2043363226213245
2144424576626871
22265486109347600
23309910685974471

[20,21,125,146,5965,6111,36520,42631,1741760,
 1784391,10663715,12448106,508587955,521036061,
 3113768260,3634804321,148505941100,152140745421,
 909209668205,1061350413626,43363226213245,
 44424576626871,265486109347600,309910685974471]