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A154809 as a simple table

na(n)
12
24
36
48
510
611
712
813
914
1016
1118
1219
1320
1422
1523
1624
1725
1826
1928
2029
2130
2232
2334
2435
2536
2637
2738
2839
2940
3041
3142
3243
3344
3446
3547
3648
3749
3850
3952
4053
4154
4255
4356
4457
4558
4659
4760
4861
4962
5064
5166
5267
5368
5469
5570
5671
5772
5874
5975
6076
6177
6278
6379
6480
6581
6682
6783
6884
6986
7087
7188

[2,4,6,8,10,11,12,13,14,16,18,19,20,22,23,24,25,
 26,28,29,30,32,34,35,36,37,38,39,40,41,42,43,44,
 46,47,48,49,50,52,53,54,55,56,57,58,59,60,61,62,
 64,66,67,68,69,70,71,72,74,75,76,77,78,79,80,81,
 82,83,84,86,87,88]