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A024521 as a simple table

na(n)
11
22
36
411
518
629
742
859
978
10101
11130
12161
13198
14239
15282
16329
17382
18441
19502
20569

[1,2,6,11,18,29,42,59,78,101,130,161,198,239,282,
 329,382,441,502,569]