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A088724 as a simple table

na(n)
16
218
320
440
554
656
766
878
980
10100
11102
12110
13112
14114
15138
16140
17160
18162
19174
20182
21186
22198
23200
24222
25224
26234
27246
28258
29260
30272
31282
32318
33320
34340
35354
36364
37366
38392
39400
40402
41414
42426
43438
44448
45460
46474
47486
48498
49500
50506
51520
52522
53534
54544

[6,18,20,40,54,56,66,78,80,100,102,110,112,114,
 138,140,160,162,174,182,186,198,200,222,224,234,
 246,258,260,272,282,318,320,340,354,364,366,392,
 400,402,414,426,438,448,460,474,486,498,500,506,
 520,522,534,544]