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A209350 as a simple table

na(n)
01
10
21
35
49
511
616
719
825
929
1036
1141
1249
1355
1464
1571
1681
1789
18100
19109
20121
21131
22144
23155
24169
25181
26196
27209
28225
29239
30256
31271
32289
33305
34324
35341
36361
37379
38400
39419
40441
41461
42484
43505
44529
45551
46576
47599
48625
49649
50676
51701
52729
53755
54784
55811
56841

[1,0,1,5,9,11,16,19,25,29,36,41,49,55,64,71,81,89,
 100,109,121,131,144,155,169,181,196,209,225,239,
 256,271,289,305,324,341,361,379,400,419,441,461,
 484,505,529,551,576,599,625,649,676,701,729,755,
 784,811,841]