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A167840 as a simple table

na(n)
12
21847
32179
42503
52819
63137
73433
83967
94177
104621
114831
125623
135953
146637
157283
167369
177393
187433
197621
207993
218039
228147
239257
249587
2510753
2611027
2711197
2811213
2911369
3011657
3113063
3213367
3313381
3413537
3513553
3613649
3713859
3814107
3914221
4014369
4114503

[2,1847,2179,2503,2819,3137,3433,3967,4177,4621,
 4831,5623,5953,6637,7283,7369,7393,7433,7621,7993,
 8039,8147,9257,9587,10753,11027,11197,11213,11369,
 11657,13063,13367,13381,13537,13553,13649,13859,
 14107,14221,14369,14503]