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A004928 as a simple table

na(n)
00
1521
21042
31563
42084
52605
63126
73647
84168
94689
105210
115731
126252
136773
147294
157815
168336
178857
189378
199899
2010420
2110941
2211462
2311983
2412504
2513025
2613546
2714067
2814588
2915109
3015630
3116151

[0,521,1042,1563,2084,2605,3126,3647,4168,4689,
 5210,5731,6252,6773,7294,7815,8336,8857,9378,9899,
 10420,10941,11462,11983,12504,13025,13546,14067,
 14588,15109,15630,16151]