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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 29 |
| 4 | 126 |
| 5 | 524 |
| 6 | 2387 |
| 7 | 10508 |
| 8 | 48974 |
| 9 | 222544 |
| 10 | 1052519 |
| 11 | 4878196 |
| 12 | 23293729 |
| 13 | 109442303 |
| 14 | 526219286 |
| 15 | 2496617326 |
| 16 | 12066173820 |
| 17 | 57671916912 |
| 18 | 279839865438 |
| 19 | 1345193909379 |
| 20 | 6548006073396 |
| 21 | 31620135178663 |
| 22 | 154313964081722 |
| 23 | 747937263398326 |
| 24 | 3657930720470729 |
| 25 | 17783680724340633 |
| 26 | 87130717653182968 |
[1,2,8,29,126,524,2387,10508,48974,222544,1052519, 4878196,23293729,109442303,526219286,2496617326, 12066173820,57671916912,279839865438, 1345193909379,6548006073396,31620135178663, 154313964081722,747937263398326,3657930720470729, 17783680724340633,87130717653182968] |