The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 56 |
| 7 | 104 |
| 8 | 192 |
| 9 | 355 |
| 10 | 658 |
| 11 | 1224 |
| 12 | 2288 |
| 13 | 4300 |
| 14 | 8124 |
| 15 | 15428 |
| 16 | 29440 |
| 17 | 56421 |
| 18 | 108545 |
| 19 | 209523 |
| 20 | 405606 |
| 21 | 787134 |
| 22 | 1530764 |
| 23 | 2982288 |
| 24 | 5819176 |
| 25 | 11369787 |
| 26 | 22240632 |
| 27 | 43549684 |
| 28 | 85352564 |
| 29 | 167417782 |
| 30 | 328629916 |
| 31 | 645514280 |
| 32 | 1268747000 |
| 33 | 2495141713 |
[1,2,4,8,16,30,56,104,192,355,658,1224,2288,4300, 8124,15428,29440,56421,108545,209523,405606, 787134,1530764,2982288,5819176,11369787,22240632, 43549684,85352564,167417782,328629916,645514280, 1268747000,2495141713] |