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A004255 as a simple table

na(n)
11
23
39
425
560
6126
7238
8414
9675
101045
111551
122223
133094
144200
155580
167276
179333
1811799
1914725
2018165
2122176
2226818
2332154
2438250
2545175
2653001
2761803
2871659
2982650
3094860
31108376
32123288
33139689
34157675
35177345
36198801
37222148
38247494
39274950

[1,3,9,25,60,126,238,414,675,1045,1551,2223,3094,
 4200,5580,7276,9333,11799,14725,18165,22176,26818,
 32154,38250,45175,53001,61803,71659,82650,94860,
 108376,123288,139689,157675,177345,198801,222148,
 247494,274950]