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A050567 as a simple table

na(n)
12
24
38
410
514
618
722
824
926
1028
1136
1242
1358
1464
1578
16158
17198
18206
19424
20550
21676
22904
231276
241374
251536
261642
272124
282796
295266
305318
318828
3211638
3322968
3435836
3553348
3655808
3779826
38105282
39112418
40129804
41144456
42216954
43624398
44654488

[2,4,8,10,14,18,22,24,26,28,36,42,58,64,78,158,
 198,206,424,550,676,904,1276,1374,1536,1642,2124,
 2796,5266,5318,8828,11638,22968,35836,53348,55808,
 79826,105282,112418,129804,144456,216954,624398,
 654488]