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A287723 as a simple table

na(n)
12
24
37
49
511
613
716
818
921
1023
1125
1227
1330
1432
1534
1636
1739
1841
1944
2046
2148
2250
2353
2455
2558
2660
2762
2864
2967
3069
3171
3273
3376
3478
3581
3683
3785
3887
3990
4092
4194
4296
4399
44101
45104
46106
47108
48110
49113
50115
51118
52120
53122
54124
55127
56129
57131
58133
59136
60138
61141

[2,4,7,9,11,13,16,18,21,23,25,27,30,32,34,36,39,
 41,44,46,48,50,53,55,58,60,62,64,67,69,71,73,76,
 78,81,83,85,87,90,92,94,96,99,101,104,106,108,110,
 113,115,118,120,122,124,127,129,131,133,136,138,
 141]