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A141214 as a simple table

na(n)
03
17
212
318
425
533
642
752
863
975
1088
11102
12117
13133
14150
15168
16187
17207
18228
19250
20273
21297
22322
23348
24375
25403
26432
27462
28493
29525
30558
31592
32626
33660
34694

[3,7,12,18,25,33,42,52,63,75,88,102,117,133,150,
 168,187,207,228,250,273,297,322,348,375,403,432,
 462,493,525,558,592,626,660,694]