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A115355 as a simple table

na(n)
13
217
333
441
566
677
789
8117
9133
10145
11153
12189
13161
14225
15301
16257
17324
18333
19341
20297
21432
22425
23369
24517
25613
26441
27521
28585
29513
30809
31689
32792
33657
341001
35801
36881
371000
381017
39873
40945
41900
421265
431169
441425
451089
461125
471197
481481
491161
501584

[3,17,33,41,66,77,89,117,133,145,153,189,161,225,
 301,257,324,333,341,297,432,425,369,517,613,441,
 521,585,513,809,689,792,657,1001,801,881,1000,
 1017,873,945,900,1265,1169,1425,1089,1125,1197,
 1481,1161,1584]