The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 106 |
| 4 | 2693 |
| 5 | 101136 |
| 6 | 5208427 |
| 7 | 350079136 |
| 8 | 29655632169 |
| 9 | 3084806690560 |
| 10 | 386157558367151 |
| 11 | 57239257050526464 |
| 12 | 9913670289956500333 |
| 13 | 1983894690594669669376 |
| 14 | 454331789822164009288275 |
| 15 | 118077198411780842498154496 |
| 16 | 34569903816081852421748189393 |
| 17 | 11327237659616427357082928676864 |
[1,1,7,106,2693,101136,5208427,350079136, 29655632169,3084806690560,386157558367151, 57239257050526464,9913670289956500333, 1983894690594669669376,454331789822164009288275, 118077198411780842498154496, 34569903816081852421748189393, 11327237659616427357082928676864] |