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A260440 as a simple table

na(n)
127
257
391
4121
5153
6183
7217
8247
9279
10309
11343
12373
13405
14435
15469
16499
17531
18561
19595
20625
21657
22687
23721
24751
25783
26813
27847
28877
29909
30939
31973
321003
331035
341065
351099
361129
371161
381191
391225
401255
411287
421317
431351
441381
451413
461443
471477
481507
491539
501569
511603
521633
531665
541695
551729
561759
571791
581821
591855
601885
611917
621947
631981
642011

[27,57,91,121,153,183,217,247,279,309,343,373,405,
 435,469,499,531,561,595,625,657,687,721,751,783,
 813,847,877,909,939,973,1003,1035,1065,1099,1129,
 1161,1191,1225,1255,1287,1317,1351,1381,1413,1443,
 1477,1507,1539,1569,1603,1633,1665,1695,1729,1759,
 1791,1821,1855,1885,1917,1947,1981,2011]