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A002789 as a simple table

na(n)
12
24
37
411
516
621
728
835
943
1052
1162
1272
1384
1496
15109
16123
17138
18153
19170
20187
21205
22224
23244
24264
25286
26308
27331
28355
29380
30405
31432
32459
33487
34516
35546
36576
37608
38640
39673
40707
41742
42777
43814
44851
45889
46928
47968
481008
491050
501092
511135
521179
531224
541269

[2,4,7,11,16,21,28,35,43,52,62,72,84,96,109,123,
 138,153,170,187,205,224,244,264,286,308,331,355,
 380,405,432,459,487,516,546,576,608,640,673,707,
 742,777,814,851,889,928,968,1008,1050,1092,1135,
 1179,1224,1269]