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A026439 as a simple table

na(n)
12
23
34
46
59
610
712
813
914
1016
1118
1220
1321
1422
1524
1628
1730
1832
1933
2034
2136
2237
2340
2442
2544
2645
2746
2848
2949
3050
3152
3254
3356
3457
3558
3660
3761
3864
3966
4068
4169
4270
4372
4474
4575
4676
4778
4881
4982
5084
5185
5286
5388
5490
5592
5693
5794
5896
59100
60102

[2,3,4,6,9,10,12,13,14,16,18,20,21,22,24,28,30,32,
 33,34,36,37,40,42,44,45,46,48,49,50,52,54,56,57,
 58,60,61,64,66,68,69,70,72,74,75,76,78,81,82,84,
 85,86,88,90,92,93,94,96,100,102]