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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 102 |
| 4 | 6261 |
| 5 | 2423430 |
| 6 | 6686021554 |
| 7 | 61335432894584 |
| 8 | 2941073857435300366 |
| 9 | 1190520035262419577871332 |
| 10 | 1696475310227140760623646031573 |
| 11 | 9980324833243234634513255755001535870 |
| 12 | 565171444566758371735408026461987217216896790 |
[1,2,7,102,6261,2423430,6686021554,61335432894584, 2941073857435300366,1190520035262419577871332, 1696475310227140760623646031573, 9980324833243234634513255755001535870, 565171444566758371735408026461987217216896790] |