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A188972 as a simple table

na(n)
12
24
35
48
510
612
713
815
917
1019
1122
1224
1327
1428
1529
1631
1734
1835
1937
2040
2143
2244
2345
2448
2549
2651
2752
2855
2956
3057
3162
3263
3365
3467
3571
3672
3773
3878
3979
4080
4182
4285
4386
4488
4591
4692
4793
4894
4999
50100
51102
52103
53105
54108
55109
56111
57112
58113
59116
60119
61120
62121
63127
64128
65130
66131
67133
68135
69137
70139

[2,4,5,8,10,12,13,15,17,19,22,24,27,28,29,31,34,
 35,37,40,43,44,45,48,49,51,52,55,56,57,62,63,65,
 67,71,72,73,78,79,80,82,85,86,88,91,92,93,94,99,
 100,102,103,105,108,109,111,112,113,116,119,120,
 121,127,128,130,131,133,135,137,139]