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A260003 as a simple table

na(n)
11
23
34
45
57
68
79
811
912
1013
1115
1216
1317
1419
1520
1621
1724
1825
1926
2027
2128
2229
2331
2432
2533
2635
2736
2837
2939
3040
3141
3242
3343
3444
3545
3647
3748
3849
3951
4052
4153
4255
4356
4457
4558
4659
4760
4861
4963
5064
5165
5266
5367
5469
5571
5672
5773
5874
5975

[1,3,4,5,7,8,9,11,12,13,15,16,17,19,20,21,24,25,
 26,27,28,29,31,32,33,35,36,37,39,40,41,42,43,44,
 45,47,48,49,51,52,53,55,56,57,58,59,60,61,63,64,
 65,66,67,69,71,72,73,74,75]