| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 49 |
| 2 | 746 |
| 3 | 6122 |
| 4 | 34067 |
| 5 | 144963 |
| 6 | 506772 |
| 7 | 1524628 |
| 8 | 4074949 |
| 9 | 9898229 |
| 10 | 22220990 |
| 11 | 46695870 |
| 12 | 92769495 |
| 13 | 175610631 |
| 14 | 318756136 |
| 15 | 557659432 |
| 16 | 944355593 |
| 17 | 1553488697 |
| 18 | 2489980818 |
| 19 | 3898657938 |
| 20 | 5976186139 |
| 21 | 8985711691 |
| 22 | 13274641084 |
| 23 | 19296041660 |
| 24 | 27634190285 |
[1,49,746,6122,34067,144963,506772,1524628, 4074949,9898229,22220990,46695870,92769495, 175610631,318756136,557659432,944355593, 1553488697,2489980818,3898657938,5976186139, 8985711691,13274641084,19296041660,27634190285] |