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A368680 as a simple table

na(n)
10
20
32
43
59
69
717
821
927
1031
1142
1242
1359
1460
1572
1686
17100
18108
19124
20121
21143
22152
23178
24189
25211
26214
27243
28238
29278
30280
31314
32332
33341
34358
35392
36409
37444
38448
39479
40501
41545
42540
43599
44593
45640
46664
47716
48739
49772
50810
51824
52833
53905
54934
55971
56990
571020

[0,0,2,3,9,9,17,21,27,31,42,42,59,60,72,86,100,
 108,124,121,143,152,178,189,211,214,243,238,278,
 280,314,332,341,358,392,409,444,448,479,501,545,
 540,599,593,640,664,716,739,772,810,824,833,905,
 934,971,990,1020]