login

A243128 as a simple table

na(n)
13
215
321
433
535
639
751
857
969
1087
1193
12105
13111
14123
15129
16141
17159
18165
19177
20183
21195
22201
23213
24219
25231
26237
27249
28255
29267
30273
31285
32291
33303
34309
35321
36327
37339
38345
39357
40381
41385
42393
43399
44411
45417
46429
47435
48447
49453

[3,15,21,33,35,39,51,57,69,87,93,105,111,123,129,
 141,159,165,177,183,195,201,213,219,231,237,249,
 255,267,273,285,291,303,309,321,327,339,345,357,
 381,385,393,399,411,417,429,435,447,453]