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”).

A218394 as a simple table

na(n)
11
25
37
411
525
627
731
835
937
1051
1155
1257
1361
14125
15127
16131
17135
18137
19151
20155
21157
22161
23175
24177
25181
26185
27187
28251
29255
30257
31261
32275
33277
34281
35285
36287
37301
38305
39307
40311
41625
42627
43631
44635
45637
46651
47655
48657
49661
50675
51677
52681
53685
54687
55751

[1,5,7,11,25,27,31,35,37,51,55,57,61,125,127,131,
 135,137,151,155,157,161,175,177,181,185,187,251,
 255,257,261,275,277,281,285,287,301,305,307,311,
 625,627,631,635,637,651,655,657,661,675,677,681,
 685,687,751]