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A279726 as a simple table

na(n)
10
20
30
42
56
68
716
832
944
1064
1192
12118
13150
14174
15202
16234
17298
18358
19382
20440
21512
22598
23686
24808
25924
261002
271130
281228
291336
301480
311560
321762
331966
342026
352210
362426
372614
382840
393132
403300
413496
423812
434072
444240
454616
464852
475068
485402
495522
505826
516234
526512

[0,0,0,2,6,8,16,32,44,64,92,118,150,174,202,234,
 298,358,382,440,512,598,686,808,924,1002,1130,
 1228,1336,1480,1560,1762,1966,2026,2210,2426,2614,
 2840,3132,3300,3496,3812,4072,4240,4616,4852,5068,
 5402,5522,5826,6234,6512]