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A280076 as a simple table

na(n)
11
24
39
425
549
6121
7169
8289
9361
10529
11841
12961
131369
141681
151849
162209
172809
183481
193721
204489
215041
225329
236241
246889
257921
269409
2710201
2810609
2911449
3011881
3112769
3216129
3317161
3418769
3519321
3622201
3722801
3824649
3926569
4027889
4129929
4232041
4332761
4436481

[1,4,9,25,49,121,169,289,361,529,841,961,1369,
 1681,1849,2209,2809,3481,3721,4489,5041,5329,6241,
 6889,7921,9409,10201,10609,11449,11881,12769,
 16129,17161,18769,19321,22201,22801,24649,26569,
 27889,29929,32041,32761,36481]