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A084057 as a simple table

na(n)
01
11
26
316
456
5176
6576
71856
86016
919456
1062976
11203776
12659456
132134016
146905856
1522347776
1672318976
17234029056
18757334016
192450784256
207930904576
2125664946176
2283053510656
23268766806016
24869747654656
252814562533376
269108115685376
2729474481504256

[1,1,6,16,56,176,576,1856,6016,19456,62976,203776,
 659456,2134016,6905856,22347776,72318976,
 234029056,757334016,2450784256,7930904576,
 25664946176,83053510656,268766806016,869747654656,
 2814562533376,9108115685376,29474481504256]