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A304806 as a simple table

na(n)
01
13
24
35
46
57
68
79
811
912
1013
1114
1215
1316
1418
1519
1620
1721
1822
1923
2025
2126
2227
2328
2429
2530
2632
2733
2834
2935
3036
3138
3239
3340
3441
3542
3643
3745
3846
3947
4048
4149
4250
4352
4453
4554
4655
4756
4857
4958
5060
5161
5262
5363
5464
5565
5667
5768
5869
5970
6071
6172
6274
6375
6476
6577
6678

[1,3,4,5,6,7,8,9,11,12,13,14,15,16,18,19,20,21,22,
 23,25,26,27,28,29,30,32,33,34,35,36,38,39,40,41,
 42,43,45,46,47,48,49,50,52,53,54,55,56,57,58,60,
 61,62,63,64,65,67,68,69,70,71,72,74,75,76,77,78]