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A252169 as a simple table

na(n)
12
24
36
49
511
613
715
818
920
1022
1124
1227
1329
1431
1533
1636
1738
1840
1942
2045
2147
2249
2351
2454
2556
2658
2760
2863
2965
3067
3169
3272
3374
3476
3578
3681
3783
3885
3987
4090
4192
4294
4396
4499
45101
46103
47105
48108
49110
50112
51114
52117
53119
54121
55124
56126
57128
58130

[2,4,6,9,11,13,15,18,20,22,24,27,29,31,33,36,38,
 40,42,45,47,49,51,54,56,58,60,63,65,67,69,72,74,
 76,78,81,83,85,87,90,92,94,96,99,101,103,105,108,
 110,112,114,117,119,121,124,126,128,130]