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A139269 as a simple table

na(n)
12
26
314
418
526
630
742
850
962
1066
1174
1286
1398
14102
15126
16134
17138
18146
19150
20158
21174
22186
23198
24210
25222
26230
27254
28258
29266
30270
31282
32302
33318
34326
35338
36342
37378
38386
39390
40402
41410
42422
43438
44446
45462
46470
47474
48482

[2,6,14,18,26,30,42,50,62,66,74,86,98,102,126,134,
 138,146,150,158,174,186,198,210,222,230,254,258,
 266,270,282,302,318,326,338,342,378,386,390,402,
 410,422,438,446,462,470,474,482]