A015809 - OEIS

A015809 as a simple table

n	a(n)
1	1
2	3
3	15
4	35
5	87
6	95
7	105
8	135
9	147
10	209
11	215
12	285
13	297
14	315
15	357
16	455
17	551
18	609
19	627
20	635
21	645
22	783
23	899
24	957
25	1015
26	1045
27	1107
28	1211
29	1343
30	1349
31	1365
32	1485
33	1505
34	1639
35	1653
36	1905
37	1917
38	2159
39	2261
40	2337
41	2373
42	2639
43	2697
44	2967
45	3045

[1,3,15,35,87,95,105,135,147,209,215,285,297,315, 357,455,551,609,627,635,645,783,899,957,1015,1045, 1107,1211,1343,1349,1365,1485,1505,1639,1653,1905, 1917,2159,2261,2337,2373,2639,2697,2967,3045]