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A146991 as a simple table

na(n)
17
241
3380
4475
5506
6570
7759
84901
936050
1039845
1148700
1249964
1350281
1454075
1555973
1672100
1774946
1879690
1990125
2099928
21499001
223200225
233247660
243497480
253747300
263905413
273997120
284246940
294623250
304803500
314999561
325002724

[7,41,380,475,506,570,759,4901,36050,39845,48700,
 49964,50281,54075,55973,72100,74946,79690,90125,
 99928,499001,3200225,3247660,3497480,3747300,
 3905413,3997120,4246940,4623250,4803500,4999561,
 5002724]