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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 36 |
| 3 | 101 |
| 4 | 285 |
| 5 | 806 |
| 6 | 2281 |
| 7 | 6457 |
| 8 | 18280 |
| 9 | 51753 |
| 10 | 146521 |
| 11 | 414826 |
| 12 | 1174445 |
| 13 | 3325061 |
| 14 | 9413836 |
| 15 | 26652237 |
| 16 | 75457205 |
| 17 | 213632718 |
| 18 | 604832081 |
| 19 | 1712386801 |
| 20 | 4848070480 |
| 21 | 13725746641 |
| 22 | 38860021041 |
| 23 | 110019605842 |
| 24 | 311485000405 |
| 25 | 881869233533 |
[13,36,101,285,806,2281,6457,18280,51753,146521, 414826,1174445,3325061,9413836,26652237,75457205, 213632718,604832081,1712386801,4848070480, 13725746641,38860021041,110019605842,311485000405, 881869233533] |