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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 11 |
| 3 | 96 |
| 4 | 1117 |
| 5 | 16226 |
| 6 | 282503 |
| 7 | 5732736 |
| 8 | 132852169 |
| 9 | 3461582882 |
| 10 | 100170007859 |
| 11 | 3187366835040 |
| 12 | 110607201645061 |
| 13 | 4157078373725762 |
| 14 | 168223595493553871 |
| 15 | 7292428324945552896 |
| 16 | 337148168449629548497 |
| 17 | 16559308764450704877506 |
| 18 | 861070129828668874777883 |
[1,2,11,96,1117,16226,282503,5732736,132852169, 3461582882,100170007859,3187366835040, 110607201645061,4157078373725762, 168223595493553871,7292428324945552896, 337148168449629548497,16559308764450704877506, 861070129828668874777883] |