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”).

A271974 as a simple table

na(n)
2-1
33
4-3
5-5
67
79
8-9
9-11
1015
11-15
1219
1321
14-21
15-23
1627
17-29
1831
19-33
20-35
2137
22-39
23-41
2445
2549
2651
27-51
28-53
2955
3057
31-63
32-65
3369
34-69
3575
36-75
3779
38-81
39-83
4087
41-89
4291
43-95
4497
4599
46-99
47-105
48-111
49-113
50115
51117
52-119
53121
54-125
55129
56-131
57135
58-135
59139
60141
61-141
62147
63-153
64-155
65157
66159
67-165
68169
69-173
70175
71177
72-179
73-183
74187
75-189
76-191
77195
78199
79201
80205

[-1,3,-3,-5,7,9,-9,-11,15,-15,19,21,-21,-23,27,
 -29,31,-33,-35,37,-39,-41,45,49,51,-51,-53,55,57,
 -63,-65,69,-69,75,-75,79,-81,-83,87,-89,91,-95,97,
 99,-99,-105,-111,-113,115,117,-119,121,-125,129,
 -131,135,-135,139,141,-141,147,-153,-155,157,159,
 -165,169,-173,175,177,-179,-183,187,-189,-191,195,
 199,201,205]