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A038004 as a simple table

na(n)
12
27
35
413
525
637
741
889
961
1085
11113
12221
13253
14281
15181
16361
17421
18433
19761
20841
21613
22793
231009
241541
251201
261901
271121
281261
292801
302881
312053
323173
332773
342521
352161
363421
374001
386865
395581
406553
415441
426481
437141
4410193

[2,7,5,13,25,37,41,89,61,85,113,221,253,281,181,
 361,421,433,761,841,613,793,1009,1541,1201,1901,
 1121,1261,2801,2881,2053,3173,2773,2521,2161,3421,
 4001,6865,5581,6553,5441,6481,7141,10193]