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| n | a(n) |
|---|---|
| 8 | 1 |
| 9 | 9 |
| 10 | 73 |
| 11 | 467 |
| 12 | 2941 |
| 13 | 17062 |
| 14 | 98109 |
| 15 | 549830 |
| 16 | 3078128 |
| 17 | 17083101 |
| 18 | 95234969 |
| 19 | 530955450 |
| 20 | 2980776051 |
| 21 | 16808708404 |
| 22 | 95549803402 |
| 23 | 546704306077 |
| 24 | 3154865181339 |
| 25 | 18342681708367 |
| 26 | 107574634701933 |
| 27 | 635887706724494 |
| 28 | 3791175789308746 |
| 29 | 22783950119750786 |
| 30 | 138077379449210041 |
[1,9,73,467,2941,17062,98109,549830,3078128, 17083101,95234969,530955450,2980776051, 16808708404,95549803402,546704306077, 3154865181339,18342681708367,107574634701933, 635887706724494,3791175789308746, 22783950119750786,138077379449210041] |