n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 15 |
4 | 54 |
5 | 236 |
6 | 1254 |
7 | 7986 |
8 | 59584 |
9 | 509304 |
10 | 4897272 |
11 | 52237448 |
12 | 611460432 |
13 | 7787383488 |
14 | 107155194928 |
15 | 1583776282704 |
16 | 25019083516416 |
17 | 420609003810944 |
18 | 7496930998018176 |
19 | 141203784944996736 |
20 | 2802115237399913728 |
21 | 58432523737192745472 |
22 | 1277372108617847278848 |
[1,2,5,15,54,236,1254,7986,59584,509304,4897272, 52237448,611460432,7787383488,107155194928, 1583776282704,25019083516416,420609003810944, 7496930998018176,141203784944996736, 2802115237399913728,58432523737192745472, 1277372108617847278848] |