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A258602 as a simple table

na(n)
12
25
312
420
537
645
768
882
9106
10142
11154
12196
13219
14234
15260
16305
17342
18360
19407
20434
21451
22496
23528
24573
25635
26668
27681
28720
29737
30770
31885
32919
33966
34984
351065
361087
371139
381193
391228
401283
411331
421348
431440
441455
451484
461509
471624
481731
491767
501789

[2,5,12,20,37,45,68,82,106,142,154,196,219,234,
 260,305,342,360,407,434,451,496,528,573,635,668,
 681,720,737,770,885,919,966,984,1065,1087,1139,
 1193,1228,1283,1331,1348,1440,1455,1484,1509,1624,
 1731,1767,1789]