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| n | a(n) |
|---|---|
| 3 | 6 |
| 4 | 156 |
| 5 | 1191 |
| 6 | 5565 |
| 7 | 19620 |
| 8 | 57351 |
| 9 | 146391 |
| 10 | 336951 |
| 11 | 714555 |
| 12 | 1417515 |
| 13 | 2660196 |
| 14 | 4763226 |
| 15 | 8191911 |
| 16 | 13604220 |
| 17 | 21909810 |
| 18 | 34341666 |
| 19 | 52542036 |
| 20 | 78664446 |
| 21 | 115493685 |
| 22 | 166585755 |
| 23 | 236429886 |
| 24 | 330634821 |
| 25 | 456141681 |
| 26 | 621465825 |
| 27 | 836970225 |
| 28 | 1115172981 |
| 29 | 1471091706 |
| 30 | 1922627616 |
[6,156,1191,5565,19620,57351,146391,336951,714555, 1417515,2660196,4763226,8191911,13604220,21909810, 34341666,52542036,78664446,115493685,166585755, 236429886,330634821,456141681,621465825,836970225, 1115172981,1471091706,1922627616] |