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A027927 as a simple table

na(n)
21
32
45
512
626
751
892
9155
10247
11376
12551
13782
141080
151457
161926
172501
183197
194030
205017
216176
227526
239087
2410880
2512927
2615251
2717876
2820827
2924130
3027812
3131901
3236426
3341417
3446905
3552922
3659501
3766676
3874482
3982955
4092132
41102051
42112751
43124272
44136655
45149942
46164176
47179401

[1,2,5,12,26,51,92,155,247,376,551,782,1080,1457,
 1926,2501,3197,4030,5017,6176,7526,9087,10880,
 12927,15251,17876,20827,24130,27812,31901,36426,
 41417,46905,52922,59501,66676,74482,82955,92132,
 102051,112751,124272,136655,149942,164176,179401]