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A038108 as a simple table

na(n)
20
32
46
58
613
716
822
926
1034
1139
1248
1355
1462
1575
1682
1789
18103
19113
20126
21135
22149
23163
24179
25190
26202
27220
28236
29252
30270
31288
32304
33320
34340
35360
36381
37403
38425
39443
40462
41483
42508
43532
44556
45581
46604
47633
48655
49678
50709
51738
52761
53782

[0,2,6,8,13,16,22,26,34,39,48,55,62,75,82,89,103,
 113,126,135,149,163,179,190,202,220,236,252,270,
 288,304,320,340,360,381,403,425,443,462,483,508,
 532,556,581,604,633,655,678,709,738,761,782]