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A299265 as a simple table

na(n)
01
16
219
345
490
5159
6257
7390
8563
9781
101050
111375
121761
132214
142739
153341
164026
174799
185665
196630
207699
218877
2210170
2311583
2413121
2514790
2616595
2718541
2820634
2922879
3025281
3127846
3230579
3333485
3436570
3539839
3643297
3746950
3850803
3954861
4059130

[1,6,19,45,90,159,257,390,563,781,1050,1375,1761,
 2214,2739,3341,4026,4799,5665,6630,7699,8877,
 10170,11583,13121,14790,16595,18541,20634,22879,
 25281,27846,30579,33485,36570,39839,43297,46950,
 50803,54861,59130]