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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 41 |
| 3 | 189 |
| 4 | 797 |
| 5 | 3357 |
| 6 | 13733 |
| 7 | 54497 |
| 8 | 218561 |
| 9 | 873641 |
| 10 | 3491841 |
| 11 | 13964481 |
| 12 | 55864297 |
| 13 | 223446945 |
| 14 | 893841301 |
| 15 | 3575071493 |
[1,5,41,189,797,3357,13733,54497,218561,873641, 3491841,13964481,55864297,223446945,893841301, 3575071493] |