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A274523 as a simple table

na(n)
01
10
20
30
41
52
65
78
814
920
1030
1140
1255
1370
1491
15112
16141
17170
18209
19250
20305
21364
22444
23534
24655
25796
26984
271208
281504
291860
302322
312882
323597
334460
345546
356852
368471
3710406
3812773
3915584
4018984
4122994
4227794
4333422
4440099
4547882
4657046
4767676
4880111

[1,0,0,0,1,2,5,8,14,20,30,40,55,70,91,112,141,170,
 209,250,305,364,444,534,655,796,984,1208,1504,
 1860,2322,2882,3597,4460,5546,6852,8471,10406,
 12773,15584,18984,22994,27794,33422,40099,47882,
 57046,67676,80111]