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A027690 as a simple table

na(n)
05
17
211
317
425
535
647
761
877
995
10115
11137
12161
13187
14215
15245
16277
17311
18347
19385
20425
21467
22511
23557
24605
25655
26707
27761
28817
29875
30935
31997
321061
331127
341195
351265
361337
371411
381487
391565
401645
411727
421811
431897
441985
452075
462167
472261
482357
492455
502555

[5,7,11,17,25,35,47,61,77,95,115,137,161,187,215,
 245,277,311,347,385,425,467,511,557,605,655,707,
 761,817,875,935,997,1061,1127,1195,1265,1337,1411,
 1487,1565,1645,1727,1811,1897,1985,2075,2167,2261,
 2357,2455,2555]