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A302561 as a simple table

na(n)
11
2121
31068
44720
514705
636981
780416
8157368
9284265
10482185
11777436
121202136
131794793
142600885
153673440
165073616
176871281
189145593
1911985580
2015490720
2119771521
2224950101
2331160768
2438550600
2547280025
2657523401
2769469596
2883322568
2999301945

[1,121,1068,4720,14705,36981,80416,157368,284265,
 482185,777436,1202136,1794793,2600885,3673440,
 5073616,6871281,9145593,11985580,15490720,
 19771521,24950101,31160768,38550600,47280025,
 57523401,69469596,83322568,99301945]