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A011908 as a simple table

na(n)
00
10
20
30
40
52
64
78
812
919
1027
1138
1250
1366
1484
15105
16129
17156
18188
19223
20263
21306
22355
23408
24467
25530
26600
27675
28756
29843
30936
311037
321144
331259
341380
351510
361647
371793
381946
392109
402280
412460
422649
432847
443056
453274
463503
473741
483991
494251
504523
514805
525100
535406
545724
556054
566396
576752
587120

[0,0,0,0,0,2,4,8,12,19,27,38,50,66,84,105,129,156,
 188,223,263,306,355,408,467,530,600,675,756,843,
 936,1037,1144,1259,1380,1510,1647,1793,1946,2109,
 2280,2460,2649,2847,3056,3274,3503,3741,3991,4251,
 4523,4805,5100,5406,5724,6054,6396,6752,7120]