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A290600 as a simple table

na(n)
12
22
33
44
52
64
76
83
96
102
114
125
136
148
152
163
174
186
198
209
2110
222
234
246
257
268
2710
2812
293
305
316
329
3310
3412
352
364
376
388
3910
4012
4114
422
433
444
456
468
479
4810
4912
5014
5115
5216
532
544
555
566
578
5810
5912
6014
6115
6216
6318
643
656
667
679
6812
6914
7015
7118

[2,2,3,4,2,4,6,3,6,2,4,5,6,8,2,3,4,6,8,9,10,2,4,6,
 7,8,10,12,3,5,6,9,10,12,2,4,6,8,10,12,14,2,3,4,6,
 8,9,10,12,14,15,16,2,4,5,6,8,10,12,14,15,16,18,3,
 6,7,9,12,14,15,18]