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A227259 as a simple table

na(n)
13
29
323
450
596
6168
7274
8423
9625
10891
111233
121664
132198
142850
153636
164573
175679
186973
198475
2010206
2112188
2214444
2316998
2419875
2523101
2626703
2730709
2835148
2940050
3045446
3151368
3257849
3364923
3472625
3580991
3690058
3799864
38110448
39121850
40134111

[3,9,23,50,96,168,274,423,625,891,1233,1664,2198,
 2850,3636,4573,5679,6973,8475,10206,12188,14444,
 16998,19875,23101,26703,30709,35148,40050,45446,
 51368,57849,64923,72625,80991,90058,99864,110448,
 121850,134111]