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A254058 as a simple table

na(n)
12
24
35
47
58
69
711
812
913
1015
1116
1217
1318
1420
1521
1622
1724
1825
1926
2028
2129
2230
2332
2433
2534
2635
2737
2838
2939
3041
3142
3243
3345
3446
3547
3648
3750
3851
3952
4054
4155
4256
4358
4459
4560
4661
4763
4864
4965
5067
5168
5269
5371
5472
5573
5674
5776
5877
5978
6080
6181
6282
6384
6485
6586
6687
6789

[2,4,5,7,8,9,11,12,13,15,16,17,18,20,21,22,24,25,
 26,28,29,30,32,33,34,35,37,38,39,41,42,43,45,46,
 47,48,50,51,52,54,55,56,58,59,60,61,63,64,65,67,
 68,69,71,72,73,74,76,77,78,80,81,82,84,85,86,87,
 89]