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A321156 as a simple table

na(n)
1561
21485
31701
42016
52556
62601
72850
83025
93060
103256
113321
124186
134761
144851
155226
165320
175565
185841
196175
206216
216336
226525
236670
247425
257821
267840
278001
288100
298625
308646
319730
329856
339945
349976
3510116
3610296
3710450
3810585
3911025
4011305
4111340
4212025
4312090

[561,1485,1701,2016,2556,2601,2850,3025,3060,3256,
 3321,4186,4761,4851,5226,5320,5565,5841,6175,6216,
 6336,6525,6670,7425,7821,7840,8001,8100,8625,8646,
 9730,9856,9945,9976,10116,10296,10450,10585,11025,
 11305,11340,12025,12090]