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A073640 as a simple table

na(n)
12
23
37
419
531
637
761
873
9127
10139
11199
12211
13229
14283
15397
16433
17439
18463
19523
20541
21547
22577
23601
24607
25619
26739
27751
28787
29811
30919
31937
32991
331009
341021
351039
361093
371201
381213
391297
401447
411453
421459
431471
441483
451657
461663
471723
481783
491867
501879

[2,3,7,19,31,37,61,73,127,139,199,211,229,283,397,
 433,439,463,523,541,547,577,601,607,619,739,751,
 787,811,919,937,991,1009,1021,1039,1093,1201,1213,
 1297,1447,1453,1459,1471,1483,1657,1663,1723,1783,
 1867,1879]