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A155771 as a simple table

na(n)
15
26
37
48
59
610
711
812
914
1015
1116
1217
1318
1419
1521
1622
1723
1825
1927
2028
2129
2233
2334
2439
2542
2644
2745
2846
2948
3050
3152
3253
3356
3457
3558
3659
3761
3865
3966
4068
4169
4274
4377
4480
4583
4686
4787
4890
4991
5093
5195
5296
5399
54101
55103
56104
57106
58107
59110
60116
61121
62126
63128
64130
65131
66133
67136

[5,6,7,8,9,10,11,12,14,15,16,17,18,19,21,22,23,25,
 27,28,29,33,34,39,42,44,45,46,48,50,52,53,56,57,
 58,59,61,65,66,68,69,74,77,80,83,86,87,90,91,93,
 95,96,99,101,103,104,106,107,110,116,121,126,128,
 130,131,133,136]