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A145340 as a simple table

na(n)
12
23
34
44
56
66
76
86
98
108
118
129
138
148
1510
168
1712
1812
198
2012
2112
2210
2312
2412
2512
269
278
2812
2912
3010
3112
3212
338
3412
3512
3612
3712
3810
3916
408
4118
4218
4314
4414
4512
4612
4716
4812
4912
5012
5112
5220
5320
5418
559
5616
5716
5816
5912
6016
618
6212
6312
6416
6516
668
6716
6820
6912
7012
7112
7224
7310
7412
7516
7616
7716

[2,3,4,4,6,6,6,6,8,8,8,9,8,8,10,8,12,12,8,12,12,
 10,12,12,12,9,8,12,12,10,12,12,8,12,12,12,12,10,
 16,8,18,18,14,14,12,12,16,12,12,12,12,20,20,18,9,
 16,16,16,12,16,8,12,12,16,16,8,16,20,12,12,12,24,
 10,12,16,16,16]