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A273790 as a simple table

na(n)
01
16
231
380
4161
5282
6451
7676
8965
91326
101767
112296
122921
133650
144491
155452
166541
177766
189135
1910656
2012337
2114186
2216211
2318420
2420821
2523422
2626231
2729256
2832505
2935986
3039707
3143676
3247901
3352390
3457151
3562192
3667521
3773146
3879075
3985316
4091877
4198766

[1,6,31,80,161,282,451,676,965,1326,1767,2296,
 2921,3650,4491,5452,6541,7766,9135,10656,12337,
 14186,16211,18420,20821,23422,26231,29256,32505,
 35986,39707,43676,47901,52390,57151,62192,67521,
 73146,79075,85316,91877,98766]