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A069778 as a simple table

na(n)
01
16
221
352
4105
5186
6301
7456
8657
9910
101221
111596
122041
132562
143165
153856
164641
175526
186517
197620
208841
2110186
2211661
2313272
2415025
2516926
2618981
2721196
2823577
2926130
3028861
3131776
3234881
3338182
3441685
3545396
3649321
3753466
3857837
3962440
4067281
4172366

[1,6,21,52,105,186,301,456,657,910,1221,1596,2041,
 2562,3165,3856,4641,5526,6517,7620,8841,10186,
 11661,13272,15025,16926,18981,21196,23577,26130,
 28861,31776,34881,38182,41685,45396,49321,53466,
 57837,62440,67281,72366]