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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 29 |
| 4 | 124 |
| 5 | 529 |
| 6 | 2359 |
| 7 | 10644 |
| 8 | 48948 |
| 9 | 226835 |
| 10 | 1062866 |
| 11 | 5009699 |
| 12 | 23764365 |
| 13 | 113259223 |
| 14 | 542090212 |
| 15 | 2603533029 |
| 16 | 12543230270 |
| 17 | 60588404420 |
| 18 | 293350409953 |
| 19 | 1423216303018 |
| 20 | 6917478723944 |
| 21 | 33676655218078 |
| 22 | 164189086466461 |
| 23 | 801548983996770 |
| 24 | 3917715748909901 |
| 25 | 19169259667933707 |
| 26 | 93887219651250021 |
[1,2,8,29,124,529,2359,10644,48948,226835,1062866, 5009699,23764365,113259223,542090212,2603533029, 12543230270,60588404420,293350409953, 1423216303018,6917478723944,33676655218078, 164189086466461,801548983996770,3917715748909901, 19169259667933707,93887219651250021] |