login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A213891 as a simple table

na(n)
13
211
319
443
567
683
7107
8131
9139
10163
11211
12283
13307
14331
15347
16467
17491
18499
19523
20547
21563
22571
23587
24619
25659
26691
27739
28787
29811
30859
31883
32907
33947
34971
351019
361051
371123
381163
391171
401283
411291
421307

[3,11,19,43,67,83,107,131,139,163,211,283,307,331,
 347,467,491,499,523,547,563,571,587,619,659,691,
 739,787,811,859,883,907,947,971,1019,1051,1123,
 1163,1171,1283,1291,1307]