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A028690 as a simple table

na(n)
11
22
36
412
520
624
730
842
956
1072
1190
12110
13132
14156
15182
16210
17240
18272
19306
20342
21380
22420
23432
24462
25506
26552
27600
28650
29702
30756
31812
32870
33930
34992
351056
361122
371190
381260
391332
401344
411406
421482
431560
441640
451722
461806
471892
481980
492070
502162
512256
522352

[1,2,6,12,20,24,30,42,56,72,90,110,132,156,182,
 210,240,272,306,342,380,420,432,462,506,552,600,
 650,702,756,812,870,930,992,1056,1122,1190,1260,
 1332,1344,1406,1482,1560,1640,1722,1806,1892,1980,
 2070,2162,2256,2352]