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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 8 |
| 3 | 17 |
| 4 | 25 |
| 5 | 42 |
| 6 | 67 |
| 7 | 913 |
| 8 | 2806 |
| 9 | 6525 |
| 10 | 15856 |
| 11 | 85805 |
| 12 | 101661 |
| 13 | 187466 |
| 14 | 851525 |
| 15 | 8702716 |
| 16 | 35662389 |
| 17 | 44365105 |
| 18 | 80027494 |
| 19 | 444502575 |
| 20 | 969032644 |
| 21 | 2382567863 |
| 22 | 8116736233 |
| 23 | 107900138892 |
| 24 | 116016875125 |
| 25 | 223917014017 |
| 26 | 339933889142 |
| 27 | 903784792301 |
| 28 | 6666427435249 |
| 29 | 7570212227550 |
[1,1,8,17,25,42,67,913,2806,6525,15856,85805, 101661,187466,851525,8702716,35662389,44365105, 80027494,444502575,969032644,2382567863, 8116736233,107900138892,116016875125,223917014017, 339933889142,903784792301,6666427435249, 7570212227550] |