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A154240 as a simple table

na(n)
11
216
3198
42240
524356
6259776
72743768
828833280
9302193936
103162772736
1133077115488
12345793029120
133614215767616
1437771456592896
15394718790964608
164124756173045760
1743102408892784896
18450402684247904256

[1,16,198,2240,24356,259776,2743768,28833280,
 302193936,3162772736,33077115488,345793029120,
 3614215767616,37771456592896,394718790964608,
 4124756173045760,43102408892784896,
 450402684247904256]