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A000785 as a simple table

na(n)
10
20
30
41
52
65
711
821
939
1073
11129
12226
13388
14659
151100
161821
172976
184828
197754
2012370
2119574
2230789
2348097
2474725
25115410
26177366
27271159
28412665
29625098
30942932
311416362
322119282
333158840
344691431
356942882
3610240503
3715054705

[0,0,0,1,2,5,11,21,39,73,129,226,388,659,1100,
 1821,2976,4828,7754,12370,19574,30789,48097,74725,
 115410,177366,271159,412665,625098,942932,1416362,
 2119282,3158840,4691431,6942882,10240503,15054705]