login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A330288 as a simple table

na(n)
11
23
33
410
515
621
717
821
919
1029
1129
1249
1347
1449
1591
1675
1773
1875
1973
2075
2173
2275
2373
2475
2573
2675
27123
28121
29135
30135
31131
32135
33131
34131
35163
36157
37153
38157
39187
40193
41181
42193
43215
44223
45213
46213
47277
48275
49243
50243
51321
52299
53289
54291
55261
56265
57261
58265
59261

[1,3,3,10,15,21,17,21,19,29,29,49,47,49,91,75,73,
 75,73,75,73,75,73,75,73,75,123,121,135,135,131,
 135,131,131,163,157,153,157,187,193,181,193,215,
 223,213,213,277,275,243,243,321,299,289,291,261,
 265,261,265,261]