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A010446 as a simple table

na(n)
10
21
34
49
515
616
719
821
925
1026
1130
1234
1335
1436
1549
1650
1751
1855
1959
2060
2164
2266
2369
2470
2576
2681
2784

[0,1,4,9,15,16,19,21,25,26,30,34,35,36,49,50,51,
 55,59,60,64,66,69,70,76,81,84]