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A175907 as a simple table

na(n)
16
230
342
466
578
6102
7114
8138
9174
10186
11210
12222
13246
14258
15273
16282
17318
18330
19354
20366
21390
22402
23426
24438
25462
26474
27498
28510
29534
30546
31570
32582
33606
34618
35642
36654
37678
38690
39714
40762
41786
42798
43806
44822
45834
46858
47870
48894
49906
50930
51942
52966
53978
541002
551038

[6,30,42,66,78,102,114,138,174,186,210,222,246,
 258,273,282,318,330,354,366,390,402,426,438,462,
 474,498,510,534,546,570,582,606,618,642,654,678,
 690,714,762,786,798,806,822,834,858,870,894,906,
 930,942,966,978,1002,1038]