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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 6 |
| 5 | 8 |
| 6 | 12 |
| 7 | 20 |
| 8 | 36 |
| 9 | 52 |
| 10 | 84 |
| 11 | 148 |
| 12 | 276 |
| 13 | 532 |
| 14 | 1044 |
| 15 | 2068 |
| 16 | 4116 |
| 17 | 6164 |
| 18 | 10260 |
| 19 | 18452 |
| 20 | 34836 |
| 21 | 67604 |
| 22 | 133140 |
| 23 | 264212 |
| 24 | 526356 |
| 25 | 1050644 |
| 26 | 2099220 |
| 27 | 4196372 |
| 28 | 8390676 |
| 29 | 16779284 |
| 30 | 33556500 |
| 31 | 67110932 |
| 32 | 134219796 |
| 33 | 201328660 |
| 34 | 335546388 |
| 35 | 603981844 |
[1,2,3,4,6,8,12,20,36,52,84,148,276,532,1044,2068, 4116,6164,10260,18452,34836,67604,133140,264212, 526356,1050644,2099220,4196372,8390676,16779284, 33556500,67110932,134219796,201328660,335546388, 603981844] |