| n | a(n) |
|---|---|
| 3 | 3 |
| 4 | 44 |
| 5 | 287 |
| 6 | 1315 |
| 7 | 4862 |
| 8 | 15511 |
| 9 | 44360 |
| 10 | 116431 |
| 11 | 284949 |
| 12 | 657696 |
| 13 | 1443853 |
| 14 | 3034549 |
| 15 | 6137552 |
| 16 | 11996470 |
| 17 | 22739586 |
| 18 | 41923060 |
| 19 | 75361026 |
| 20 | 132371521 |
| 21 | 227617365 |
| 22 | 383784757 |
| 23 | 635428859 |
| 24 | 1034423186 |
| 25 | 1657591966 |
| 26 | 2617279946 |
| 27 | 4075841668 |
[3,44,287,1315,4862,15511,44360,116431,284949, 657696,1443853,3034549,6137552,11996470,22739586, 41923060,75361026,132371521,227617365,383784757, 635428859,1034423186,1657591966,2617279946, 4075841668] |