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A263242 as a simple table

na(n)
131
271
373
497
5311
6701
7733
8743
9751
10761
11907
12937
13941
14953
15967
16971
17983
18991
193221
209001
219221
229227
239551
249661
259883
2632321
2733931
2834141
2934841
3035051
3136061
3236761
3337571
3439791
3570001
3671711
3772221
3873331
3974143
4074441
4174843
4274941
4375253
4476261
4576463
4676561

[31,71,73,97,311,701,733,743,751,761,907,937,941,
 953,967,971,983,991,3221,9001,9221,9227,9551,9661,
 9883,32321,33931,34141,34841,35051,36061,36761,
 37571,39791,70001,71711,72221,73331,74143,74441,
 74843,74941,75253,76261,76463,76561]