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A280875 as a simple table

na(n)
10
21
33
42
55
69
74
813
910
106
1118
1211
1316
147
1525
1617
1715
1828
1912
2019
2127
228
2314
2424
2535
2649
2720
2837
2952
3021
3144
3233
3323
3447
3541
3629
3754
3870
3922
4042
4161
4236
4378
4431
4553
4674
4730
4857
4983
5026
5156
5284
5332
5464
5551
5634
5771
58100
5938
6081
6160
6240
6386
6463
6539
6687
6769
6843

[0,1,3,2,5,9,4,13,10,6,18,11,16,7,25,17,15,28,12,
 19,27,8,14,24,35,49,20,37,52,21,44,33,23,47,41,29,
 54,70,22,42,61,36,78,31,53,74,30,57,83,26,56,84,
 32,64,51,34,71,100,38,81,60,40,86,63,39,87,69,43]