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A131409 as a simple table

na(n)
13909
287627
3132609
4163491
5167451
6170679
7209289
8224151
9270591
10309273
11318651
12327423
13340077
14395121
15444459
16481863
17497121
18522231
19536451
20584589
21624837
22633189
23680451
24752901
25765579
26767757
27830469
28848739
29878133
30915063
31938109
32953877
33954861

[3909,87627,132609,163491,167451,170679,209289,
 224151,270591,309273,318651,327423,340077,395121,
 444459,481863,497121,522231,536451,584589,624837,
 633189,680451,752901,765579,767757,830469,848739,
 878133,915063,938109,953877,954861]