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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 21 |
| 5 | 27 |
| 6 | 64 |
| 7 | 253 |
| 8 | 1629 |
| 9 | 4284 |
| 10 | 4416 |
| 11 | 5992 |
| 12 | 19621 |
| 13 | 78399 |
| 14 | 204347 |
| 15 | 298735 |
| 16 | 848999 |
| 17 | 1202402 |
| 18 | 1496888 |
| 19 | 1539370 |
| 20 | 1987614 |
| 21 | 2859485 |
| 22 | 5460483 |
| 23 | 6160282 |
| 24 | 14539187 |
| 25 | 22103424 |
| 26 | 40412450 |
| 27 | 95261053 |
| 28 | 105703913 |
| 29 | 105703932 |
| 30 | 123434487 |
[1,4,8,21,27,64,253,1629,4284,4416,5992,19621, 78399,204347,298735,848999,1202402,1496888, 1539370,1987614,2859485,5460483,6160282,14539187, 22103424,40412450,95261053,105703913,105703932, 123434487] |