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A217873 as a simple table

na(n)
00
14
216
344
496
5180
6304
7476
8704
9996
101360
111804
122336
132964
143696
154540
165504
176596
187824
199196
2010720
2112404
2214256
2316284
2418496
2520900
2623504
2726316
2829344
2932596
3036080
3139804
3243776
3348004
3452496
3557260
3662304
3767636
3873264
3979196
4085440
4192004

[0,4,16,44,96,180,304,476,704,996,1360,1804,2336,
 2964,3696,4540,5504,6596,7824,9196,10720,12404,
 14256,16284,18496,20900,23504,26316,29344,32596,
 36080,39804,43776,48004,52496,57260,62304,67636,
 73264,79196,85440,92004]