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A307921 as a simple table

na(n)
112
249
3136
4297
5556
6937
71464
82161
93052
104161
115512
127129
139036
1411257
1513816
1616737
1720044
1823761
1927912
2032521
2137612
2243209
2349336
2456017
2563276
2671137
2779624
2888761
2998572
30109081
31120312
32132289
33145036
34158577
35172936
36188137
37204204
38221161
39239032

[12,49,136,297,556,937,1464,2161,3052,4161,5512,
 7129,9036,11257,13816,16737,20044,23761,27912,
 32521,37612,43209,49336,56017,63276,71137,79624,
 88761,98572,109081,120312,132289,145036,158577,
 172936,188137,204204,221161,239032]