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A106978 as a simple table

na(n)
13
241
3137
4191
5263
6359
7461
8479
9617
10797
11827
12971
13983
141229
151439
161481
171493
181613
191697
201721
211787
222099
232339
242381
252393
262531
272621
282729
292753
302939
312999
323347
333407
343449
353767
363797
373917
384139
394481
404493
414679
424889
435087

[3,41,137,191,263,359,461,479,617,797,827,971,983,
 1229,1439,1481,1493,1613,1697,1721,1787,2099,2339,
 2381,2393,2531,2621,2729,2753,2939,2999,3347,3407,
 3449,3767,3797,3917,4139,4481,4493,4679,4889,5087]