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”).

A216523 as a simple table

na(n)
11
25
37
411
513
617
719
823
931
1035
1143
1249
1353
1461
1567
1677
1779
1885
1989
2091
21101
22119
23121
24127
25133
26139
27161
28167
29179
30187
31191
32199
33211
34215
35217
36221
37223
38227
39245
40269
41301
42313
43317
44323
45343
46347
47361
48371
49389
50395
51427
52431
53433
54457
55469
56503
57539

[1,5,7,11,13,17,19,23,31,35,43,49,53,61,67,77,79,
 85,89,91,101,119,121,127,133,139,161,167,179,187,
 191,199,211,215,217,221,223,227,245,269,301,313,
 317,323,343,347,361,371,389,395,427,431,433,457,
 469,503,539]