A289873 - OEIS

A289873 as a simple table

n	a(n)
2	1
3	3
4	5
5	7
6	9
7	15
8	21
9	27
10	33
11	39
12	45
13	55
14	65
15	75
16	85
17	95
18	105
19	119
20	133
21	147
22	161
23	175
24	189
25	207
26	225
27	243
28	261
29	279
30	297
31	319
32	341
33	363
34	385
35	407
36	429
37	455
38	481
39	507
40	533
41	559
42	585
43	615
44	645
45	675
46	705
47	735
48	765
49	799
50	833
51	867
52	901
53	935
54	969
55	1007
56	1045
57	1083
58	1121
59	1159
60	1197
61	1239
62	1281
63	1323
64	1365

[1,3,5,7,9,15,21,27,33,39,45,55,65,75,85,95,105, 119,133,147,161,175,189,207,225,243,261,279,297, 319,341,363,385,407,429,455,481,507,533,559,585, 615,645,675,705,735,765,799,833,867,901,935,969, 1007,1045,1083,1121,1159,1197,1239,1281,1323,1365]