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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 19 |
| 5 | 45 |
| 6 | 161 |
| 7 | 437 |
| 8 | 1551 |
| 9 | 4933 |
| 10 | 17139 |
| 11 | 57359 |
| 12 | 198625 |
| 13 | 705297 |
| 14 | 2502895 |
| 15 | 8975677 |
| 16 | 32125405 |
| 17 | 117179077 |
| 18 | 431439211 |
| 19 | 1588283741 |
| 20 | 5873826435 |
| 21 | 21780489477 |
| 22 | 81834285257 |
| 23 | 307828951821 |
| 24 | 1160476181565 |
| 25 | 4380836478687 |
| 26 | 16639698176315 |
| 27 | 63583818814709 |
| 28 | 243123557763827 |
| 29 | 930821719958341 |
| 30 | 3571716411859821 |
[1,1,3,5,19,45,161,437,1551,4933,17139,57359, 198625,705297,2502895,8975677,32125405,117179077, 431439211,1588283741,5873826435,21780489477, 81834285257,307828951821,1160476181565, 4380836478687,16639698176315,63583818814709, 243123557763827,930821719958341,3571716411859821] |