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A027428 as a simple table

na(n)
10
21
33
46
510
613
719
824
931
1036
1146
1251
1363
1470
1578
1687
17103
18111
19129
20139
21150
22161
23183
24192
25210
26223
27239
28252
29280
30291
31321
32337
33354
34371
35390
36403
37439
38458
39478
40493
41533
42549
43591
44611
45631
46654
47700
48717
49752
50774
51800
52823
53875

[0,1,3,6,10,13,19,24,31,36,46,51,63,70,78,87,103,
 111,129,139,150,161,183,192,210,223,239,252,280,
 291,321,337,354,371,390,403,439,458,478,493,533,
 549,591,611,631,654,700,717,752,774,800,823,875]