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A112233 as a simple table

na(n)
12
24
35
47
57
69
711
811
913
1015
1115
1217
1318
1420
1521
1622
1724
1825
1926
2028
2129
2231
2332
2433
2534
2636
2737
2838
2940
3042
3143
3244
3345
3447
3548
3650
3752
3853
3954
4055
4157
4257
4359
4460
4562
4663
4765
4867
4967
5069
5171
5272
5374
5474
5576
5677
5778
5879
5981
6082
6184
6285
6386
6488
6589
6691
6792
6894
6995
7096
7198

[2,4,5,7,7,9,11,11,13,15,15,17,18,20,21,22,24,25,
 26,28,29,31,32,33,34,36,37,38,40,42,43,44,45,47,
 48,50,52,53,54,55,57,57,59,60,62,63,65,67,67,69,
 71,72,74,74,76,77,78,79,81,82,84,85,86,88,89,91,
 92,94,95,96,98]