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| n | a(n) |
|---|---|
| 1 | 132 |
| 2 | 472 |
| 3 | 1332 |
| 4 | 3400 |
| 5 | 7948 |
| 6 | 17888 |
| 7 | 38564 |
| 8 | 82200 |
| 9 | 171236 |
| 10 | 356736 |
| 11 | 732740 |
| 12 | 1511840 |
| 13 | 3087196 |
| 14 | 6341584 |
| 15 | 12914820 |
| 16 | 26464792 |
| 17 | 53815684 |
| 18 | 110096960 |
| 19 | 223649540 |
| 20 | 456951728 |
| 21 | 927483412 |
| 22 | 1892890832 |
| 23 | 3839327172 |
| 24 | 7827922160 |
| 25 | 15867349668 |
[132,472,1332,3400,7948,17888,38564,82200,171236, 356736,732740,1511840,3087196,6341584,12914820, 26464792,53815684,110096960,223649540,456951728, 927483412,1892890832,3839327172,7827922160, 15867349668] |