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”).

A247130 as a simple table

na(n)
11
23
3-3
4-5
57
69
7-9
8-11
915
10-15
11-9
1219
1321
14-21
15-23
1627
17-15
18-29
1931
2021
21-33
22-35
2337
2415
25-39
26-41
2727
2845
29-21
30-27
3149
3251
33-51
34-53
3555
3657
37-33
38-27
39-63
40-65
4127
4269
43-69
44-35
4545
4675
47-75
48-45
4979
5033
51-81
52-83
5387
54-89
5591
5657
57-45
58-95
5997
6099
61-99

[1,3,-3,-5,7,9,-9,-11,15,-15,-9,19,21,-21,-23,27,
 -15,-29,31,21,-33,-35,37,15,-39,-41,27,45,-21,-27,
 49,51,-51,-53,55,57,-33,-27,-63,-65,27,69,-69,-35,
 45,75,-75,-45,79,33,-81,-83,87,-89,91,57,-45,-95,
 97,99,-99]