| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 21 |
| 7 | 42 |
| 8 | 51 |
| 9 | 102 |
| 10 | 112 |
| 11 | 224 |
| 12 | 235 |
| 13 | 470 |
| 14 | 486 |
| 15 | 972 |
| 16 | 990 |
| 17 | 1980 |
| 18 | 2002 |
| 19 | 4004 |
| 20 | 4027 |
| 21 | 8054 |
| 22 | 8078 |
| 23 | 16156 |
| 24 | 16181 |
| 25 | 32362 |
| 26 | 32389 |
| 27 | 64778 |
| 28 | 64806 |
| 29 | 129612 |
| 30 | 129641 |
| 31 | 259282 |
| 32 | 259313 |
| 33 | 518626 |
| 34 | 518658 |
| 35 | 1037316 |
| 36 | 1037349 |
| 37 | 2074698 |
| 38 | 2074734 |
| 39 | 4149468 |
[1,2,4,8,16,21,42,51,102,112,224,235,470,486,972, 990,1980,2002,4004,4027,8054,8078,16156,16181, 32362,32389,64778,64806,129612,129641,259282, 259313,518626,518658,1037316,1037349,2074698, 2074734,4149468] |