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A225737 as a simple table

na(n)
12
23
34
45
56
67
78
89
910
1012
1114
1215
1316
1418
1520
1621
1722
1824
1926
2027
2128
2230
2332
2433
2534
2635
2736
2838
2939
3040
3142
3244
3345
3446
3548
3650
3751
3852
3954
4055
4156
4260
4363
4464
4566
4668
4770
4872
4975
5076
5178
5280
5381
5484
5588
5690
5792
5896
5998
6099
61100
62102
63104
64105
65108
66110

[2,3,4,5,6,7,8,9,10,12,14,15,16,18,20,21,22,24,26,
 27,28,30,32,33,34,35,36,38,39,40,42,44,45,46,48,
 50,51,52,54,55,56,60,63,64,66,68,70,72,75,76,78,
 80,81,84,88,90,92,96,98,99,100,102,104,105,108,
 110]