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| n | a(n) |
|---|---|
| 7 | 1 |
| 8 | 14 |
| 9 | 112 |
| 10 | 665 |
| 11 | 3248 |
| 12 | 13776 |
| 13 | 52437 |
| 14 | 183080 |
| 15 | 595399 |
| 16 | 1824109 |
| 17 | 5310144 |
| 18 | 14787542 |
| 19 | 39605363 |
| 20 | 102465972 |
| 21 | 257005641 |
| 22 | 626841236 |
| 23 | 1490521109 |
| 24 | 3462881324 |
| 25 | 7875519169 |
| 26 | 17562223791 |
| 27 | 38456245849 |
| 28 | 82793422502 |
| 29 | 175452110162 |
| 30 | 366348547908 |
| 31 | 754392685046 |
| 32 | 1533283745644 |
| 33 | 3078157040665 |
[1,14,112,665,3248,13776,52437,183080,595399, 1824109,5310144,14787542,39605363,102465972, 257005641,626841236,1490521109,3462881324, 7875519169,17562223791,38456245849,82793422502, 175452110162,366348547908,754392685046, 1533283745644,3078157040665] |