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A049648 as a simple table

na(n)
01
14
27
311
417
523
631
741
851
961
1075
1189
12105
13123
14137
15153
16177
17199
18223
19249
20269
21291
22323
23353
24381
25413
26443
27473
28513
29549
30587
31633
32669
33705
34745
35781
36829
37883
38925
39965
401021
411073
421127
431189
441233
451279
461347
471409
481467
491529
501581
511637

[1,4,7,11,17,23,31,41,51,61,75,89,105,123,137,153,
 177,199,223,249,269,291,323,353,381,413,443,473,
 513,549,587,633,669,705,745,781,829,883,925,965,
 1021,1073,1127,1189,1233,1279,1347,1409,1467,1529,
 1581,1637]