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A026441 as a simple table

na(n)
12
24
35
46
58
610
712
813
914
1016
1117
1218
1320
1421
1522
1626
1728
1830
1932
2034
2136
2237
2338
2440
2542
2644
2745
2846
2948
3050
3152
3253
3354
3456
3557
3658
3760
3861
3962
4065
4166
4268
4370
4472
4574
4676
4778
4880
4981
5082
5185
5286
5388
5490
5592
5693
5794
5896
5997
6098

[2,4,5,6,8,10,12,13,14,16,17,18,20,21,22,26,28,30,
 32,34,36,37,38,40,42,44,45,46,48,50,52,53,54,56,
 57,58,60,61,62,65,66,68,70,72,74,76,78,80,81,82,
 85,86,88,90,92,93,94,96,97,98]