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| n | a(n) |
|---|---|
| 4 | 5 |
| 5 | 17 |
| 6 | 45 |
| 7 | 121 |
| 8 | 336 |
| 9 | 901 |
| 10 | 2347 |
| 11 | 6014 |
| 12 | 15314 |
| 13 | 38766 |
| 14 | 97531 |
| 15 | 244054 |
| 16 | 608339 |
| 17 | 1511919 |
| 18 | 3748379 |
| 19 | 9273353 |
| 20 | 22901665 |
| 21 | 56477538 |
| 22 | 139114445 |
| 23 | 342325451 |
| 24 | 841676972 |
| 25 | 2067997764 |
| 26 | 5078117000 |
| 27 | 12463618356 |
| 28 | 30577931115 |
| 29 | 74993361731 |
| 30 | 183870516407 |
| 31 | 450708620604 |
| 32 | 1104563863868 |
[5,17,45,121,336,901,2347,6014,15314,38766,97531, 244054,608339,1511919,3748379,9273353,22901665, 56477538,139114445,342325451,841676972,2067997764, 5078117000,12463618356,30577931115,74993361731, 183870516407,450708620604,1104563863868] |