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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 7 |
| 4 | 29 |
| 5 | 112 |
| 6 | 367 |
| 7 | 1359 |
| 8 | 5370 |
| 9 | 21447 |
| 10 | 86013 |
| 11 | 343936 |
| 12 | 1371301 |
| 13 | 5479081 |
| 14 | 21913562 |
| 15 | 87653287 |
| 16 | 350634149 |
| 17 | 1402534912 |
| 18 | 5609859607 |
| 19 | 22439049159 |
| 20 | 89756056050 |
| 21 | 359024196327 |
| 22 | 1436098422693 |
| 23 | 5744393762896 |
| 24 | 22977556193101 |
| 25 | 91910198451361 |
[1,2,7,29,112,367,1359,5370,21447,86013,343936, 1371301,5479081,21913562,87653287,350634149, 1402534912,5609859607,22439049159,89756056050, 359024196327,1436098422693,5744393762896, 22977556193101,91910198451361] |