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A280771 as a simple table

na(n)
12
23
35
46
58
69
712
813
915
1016
1118
1219
1321
1422
1525
1626
1729
1830
1932
2033
2137
2238
2340
2441
2545
2646
2750
2851
2953
3054
3156
3257
3360
3461
3564
3665
3767
3868
3971
4072
4175
4276
4378
4479
4581
4682
4784
4885
4988
5089
5192
5293
5396
5497
5599
56100
57102
58103
59105
60106
61109
62110
63112
64113
65116
66117
67122
68123
69126
70127
71129
72130
73133

[2,3,5,6,8,9,12,13,15,16,18,19,21,22,25,26,29,30,
 32,33,37,38,40,41,45,46,50,51,53,54,56,57,60,61,
 64,65,67,68,71,72,75,76,78,79,81,82,84,85,88,89,
 92,93,96,97,99,100,102,103,105,106,109,110,112,
 113,116,117,122,123,126,127,129,130,133]