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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 22 |
| 3 | 475 |
| 4 | 20188 |
| 5 | 1472229 |
| 6 | 112441134 |
| 7 | 8415721847 |
| 8 | 1234163177336 |
| 9 | 336405959636873 |
| 10 | 95454487901599898 |
| 11 | 26891544907776231851 |
| 12 | 7513814442828887530172 |
| 13 | 2084725487959034609380301 |
| 14 | 574954374994698424018451678 |
| 15 | 157752074714160807772190133743 |
| 16 | 86177704805459827544499089423856 |
[1,22,475,20188,1472229,112441134,8415721847, 1234163177336,336405959636873,95454487901599898, 26891544907776231851,7513814442828887530172, 2084725487959034609380301, 574954374994698424018451678, 157752074714160807772190133743, 86177704805459827544499089423856] |