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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 29 |
| 4 | 129 |
| 5 | 535 |
| 6 | 2467 |
| 7 | 10844 |
| 8 | 50982 |
| 9 | 231404 |
| 10 | 1101030 |
| 11 | 5099358 |
| 12 | 24460460 |
| 13 | 114857406 |
| 14 | 554172828 |
| 15 | 2628163725 |
| 16 | 12736564173 |
| 17 | 60855656041 |
| 18 | 295934172553 |
| 19 | 1422190689641 |
| 20 | 6935071262465 |
| 21 | 33482108503613 |
| 22 | 163639829020629 |
| 23 | 793000159238839 |
| 24 | 3883024909162411 |
| 25 | 18875285298740051 |
| 26 | 92573312042858471 |
[1,2,8,29,129,535,2467,10844,50982,231404,1101030, 5099358,24460460,114857406,554172828,2628163725, 12736564173,60855656041,295934172553, 1422190689641,6935071262465,33482108503613, 163639829020629,793000159238839,3883024909162411, 18875285298740051,92573312042858471] |