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A006490 as a simple table

na(n)
11
20
33
44
510
618
735
864
9117
10210
11374
12660
131157
142016
153495
166032
1710370
1817766
1930343
2051680
2187801
22148830
23251758
24425064
25716425
261205568
272025675
283399004
295696122
309534330
3115941099
3226625280
3344426877
3474062506
35123360230
36205303932
37341416205
38567353376

[1,0,3,4,10,18,35,64,117,210,374,660,1157,2016,
 3495,6032,10370,17766,30343,51680,87801,148830,
 251758,425064,716425,1205568,2025675,3399004,
 5696122,9534330,15941099,26625280,44426877,
 74062506,123360230,205303932,341416205,567353376]