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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 19 |
| 5 | 45 |
| 6 | 161 |
| 7 | 457 |
| 8 | 1617 |
| 9 | 5179 |
| 10 | 18131 |
| 11 | 61299 |
| 12 | 219129 |
| 13 | 765515 |
| 14 | 2776355 |
| 15 | 9926825 |
| 16 | 36499945 |
| 17 | 133137127 |
| 18 | 493900777 |
| 19 | 1827816497 |
| 20 | 6849662167 |
| 21 | 25616738187 |
| 22 | 96849082153 |
| 23 | 365387747275 |
| 24 | 1391885248127 |
| 25 | 5293640623227 |
| 26 | 20284584644839 |
| 27 | 77690556924947 |
| 28 | 299311965080655 |
| 29 | 1153000387236967 |
| 30 | 4464434143035327 |
[1,1,3,5,19,45,161,457,1617,5179,18131,61299, 219129,765515,2776355,9926825,36499945,133137127, 493900777,1827816497,6849662167,25616738187, 96849082153,365387747275,1391885248127, 5293640623227,20284584644839,77690556924947, 299311965080655,1153000387236967,4464434143035327] |