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A185790 as a simple table

na(n)
116
240
3100
4260
5676
61716
74356
811220
928900
1073780
11188356
12483476
131240996
143174900
158122500
1620822100
1753377636
18136666036
19349914436
20896578580
212297284900
225883599220
2315068544516
2438602941396
2598893896676
26253305662260

[16,40,100,260,676,1716,4356,11220,28900,73780,
 188356,483476,1240996,3174900,8122500,20822100,
 53377636,136666036,349914436,896578580,2297284900,
 5883599220,15068544516,38602941396,98893896676,
 253305662260]