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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 50178 |
| 3 | 330289 |
| 4 | 4142724 |
| 5 | 38758787 |
| 6 | 721406196 |
| 7 | 10013654728 |
| 8 | 271477291887 |
| 9 | 5511387919570 |
| 10 | 217444939703686 |
| 11 | 6427549653424203 |
| 12 | 370935313492909781 |
[1,2,50178,330289,4142724,38758787,721406196, 10013654728,271477291887,5511387919570, 217444939703686,6427549653424203, 370935313492909781] |