| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 15 |
| 4 | 47 |
| 5 | 135 |
| 6 | 333 |
| 7 | 739 |
| 8 | 1500 |
| 9 | 2816 |
| 10 | 4959 |
| 11 | 8345 |
| 12 | 13493 |
| 13 | 21012 |
| 14 | 31756 |
| 15 | 46768 |
| 16 | 67237 |
| 17 | 94706 |
| 18 | 130980 |
| 19 | 178144 |
| 20 | 238696 |
| 21 | 315453 |
| 22 | 411763 |
| 23 | 531412 |
| 24 | 678795 |
| 25 | 858729 |
| 26 | 1076793 |
| 27 | 1339208 |
| 28 | 1652778 |
| 29 | 2025386 |
| 30 | 2465506 |
| 31 | 2982503 |
| 32 | 3586917 |
| 33 | 4290118 |
| 34 | 5104643 |
| 35 | 6044244 |
[1,5,15,47,135,333,739,1500,2816,4959,8345,13493, 21012,31756,46768,67237,94706,130980,178144, 238696,315453,411763,531412,678795,858729,1076793, 1339208,1652778,2025386,2465506,2982503,3586917, 4290118,5104643,6044244] |