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A270940 as a simple table

na(n)
01
16
218
338
470
5102
6174
7234
8346
9434
10598
11742
12978
131162
141454
151714
162106
172442
182894
193358
203942
214490
225106
235758
246478
257154
268142
278954
2810030
2911046
3012166
3113314
3214686
3315982
3417490
3518990
3620838
3722474
3824346
3926150
4028218
4130254
4232682
4334694

[1,6,18,38,70,102,174,234,346,434,598,742,978,
 1162,1454,1714,2106,2442,2894,3358,3942,4490,5106,
 5758,6478,7154,8142,8954,10030,11046,12166,13314,
 14686,15982,17490,18990,20838,22474,24346,26150,
 28218,30254,32682,34694]