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A192080 as a simple table

na(n)
01
16
221
356
4126
5252
6463
7804
81365
92366
104368
118736
1218565
1340410
1487381
15184604
16379050
17758100
181486675
192884776
205592405
2110919090
2221572460
2343144920
2487087001
25176565486
26357913941
27723002336
281453179126
292906358252

[1,6,21,56,126,252,463,804,1365,2366,4368,8736,
 18565,40410,87381,184604,379050,758100,1486675,
 2884776,5592405,10919090,21572460,43144920,
 87087001,176565486,357913941,723002336,1453179126,
 2906358252]