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A000784 as a simple table

na(n)
10
21
32
42
54
66
76
811
916
1020
1128
1241
1351
1470
1593
16122
17158
18211
19266
20350
21450
22577
23730
24948
251186
261510
271901
282408
292999
303790
314703
325898
337310
349111
3511231
3613979
3717168
3821229
3926036
4032095
4139188
4248155
4358657
4471798
4587262
46106472
47129014

[0,1,2,2,4,6,6,11,16,20,28,41,51,70,93,122,158,
 211,266,350,450,577,730,948,1186,1510,1901,2408,
 2999,3790,4703,5898,7310,9111,11231,13979,17168,
 21229,26036,32095,39188,48155,58657,71798,87262,
 106472,129014]