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A251149 as a simple table

na(n)
113
227
327
453
549
653
7107
887
987
10107
11213
12161
13143
14161
15213
16427
17299
18247
19247
20299
21427
22853
23565
24433
25401
26433
27565
28853
291707
301075
31777
32667
33667
34777
351075
361707
373413
382065
391413
401141
411061
421141
431413
442065
453413
466827
473991
482607
491987
501743

[13,27,27,53,49,53,107,87,87,107,213,161,143,161,
 213,427,299,247,247,299,427,853,565,433,401,433,
 565,853,1707,1075,777,667,667,777,1075,1707,3413,
 2065,1413,1141,1061,1141,1413,2065,3413,6827,3991,
 2607,1987,1743]