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A040989 as a simple table

na(n)
131
241
361
471
5101
6131
7151
8181
9191
10211
11251
12271
13281
14311
15331
16421
17431
18491
19521
20541
21571
22601
23631
24641
25661
26691
27701
28751
29761
30821
31941
32971
33991
341021
351031
361051
371061
381091
391151
401171
411201

[31,41,61,71,101,131,151,181,191,211,251,271,281,
 311,331,421,431,491,521,541,571,601,631,641,661,
 691,701,751,761,821,941,971,991,1021,1031,1051,
 1061,1091,1151,1171,1201]