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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 37 |
| 3 | 72 |
| 4 | 297 |
| 5 | 1302 |
| 6 | 5050 |
| 7 | 20188 |
| 8 | 81926 |
| 9 | 329957 |
| 10 | 1329466 |
| 11 | 5358347 |
| 12 | 21608578 |
| 13 | 87101482 |
| 14 | 351134917 |
| 15 | 1415564660 |
| 16 | 5706662796 |
| 17 | 23005513674 |
| 18 | 92743499633 |
| 19 | 373882345405 |
| 20 | 1507253219678 |
| 21 | 6076276040079 |
| 22 | 24495641982958 |
| 23 | 98750689289605 |
[8,37,72,297,1302,5050,20188,81926,329957,1329466, 5358347,21608578,87101482,351134917,1415564660, 5706662796,23005513674,92743499633,373882345405, 1507253219678,6076276040079,24495641982958, 98750689289605] |