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A309195 as a simple table

na(n)
12
22
34
44
54
64
76
88
98
108
118
128
138
148
1510
1610
1710
1810
1912
2012
2112
2212
2316
2416
2516
2616
2716
2816
2916
3016
3124
3226
3326
3426
3526
3626
3726
3826
3928
4028
4128
4228
4328
4428
4528
4628
4728
4832
4932
5032
5132
5232
5332
5432
5532
5632
5732
5832
5932
6032
6132
6232
6336
6436
6536
6636
6736
6836
6936
7036
7142
7242
7342
7442
7542
7642
7742
7842
7942
8042
8142
8242
8348
8448

[2,2,4,4,4,4,6,8,8,8,8,8,8,8,10,10,10,10,12,12,12,
 12,16,16,16,16,16,16,16,16,24,26,26,26,26,26,26,
 26,28,28,28,28,28,28,28,28,28,32,32,32,32,32,32,
 32,32,32,32,32,32,32,32,32,36,36,36,36,36,36,36,
 36,42,42,42,42,42,42,42,42,42,42,42,42,48,48]