| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 1 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 32 |
| 8 | 57 |
| 9 | 90 |
| 10 | 211 |
| 11 | 422 |
| 12 | 837 |
| 13 | 1650 |
| 14 | 3242 |
| 15 | 6152 |
| 16 | 11076 |
| 17 | 17650 |
| 18 | 41451 |
| 19 | 82902 |
| 20 | 165797 |
| 21 | 331570 |
| 22 | 663082 |
| 23 | 1325832 |
| 24 | 2650436 |
| 25 | 5296370 |
| 26 | 10581242 |
| 27 | 21097232 |
| 28 | 41945796 |
| 29 | 82897330 |
| 30 | 161824122 |
| 31 | 307847382 |
| 32 | 553894666 |
| 33 | 882839280 |
[1,3,1,4,8,16,32,57,90,211,422,837,1650,3242,6152, 11076,17650,41451,82902,165797,331570,663082, 1325832,2650436,5296370,10581242,21097232, 41945796,82897330,161824122,307847382,553894666, 882839280] |