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A188253 as a simple table

na(n)
140
21284
312692
458824
5193232
6521124
71142180
82347608
94323448
107567844
1112129300
1219691552
1329057776
1442900188
1561593740
1686648240

[40,1284,12692,58824,193232,521124,1142180,
 2347608,4323448,7567844,12129300,19691552,
 29057776,42900188,61593740,86648240]