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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 73 |
| 3 | 48 |
| 4 | 243 |
| 5 | 934 |
| 6 | 2466 |
| 7 | 11175 |
| 8 | 48002 |
| 9 | 249672 |
| 10 | 1256472 |
| 11 | 6256517 |
| 12 | 36462203 |
| 13 | 192861223 |
| 14 | 1027455632 |
| 15 | 5888885895 |
| 16 | 31880672236 |
| 17 | 173901715542 |
| 18 | 979585422447 |
| 19 | 5361016201314 |
| 20 | 29497489222797 |
| 21 | 164594660317597 |
| 22 | 905565271526330 |
[13,73,48,243,934,2466,11175,48002,249672,1256472, 6256517,36462203,192861223,1027455632,5888885895, 31880672236,173901715542,979585422447, 5361016201314,29497489222797,164594660317597, 905565271526330] |