n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 6 |
5 | 15 |
6 | 51 |
7 | 227 |
8 | 1257 |
9 | 8296 |
10 | 63394 |
11 | 549740 |
12 | 5330185 |
13 | 57117590 |
14 | 670163058 |
15 | 8543228103 |
16 | 117564576721 |
17 | 1736762231296 |
18 | 27411856376831 |
19 | 460320540171210 |
20 | 8194312180092795 |
21 | 154127845115561811 |
22 | 3054239953905841713 |
23 | 63597989583700047353 |
24 | 1388275729125313815336 |
[1,1,2,3,6,15,51,227,1257,8296,63394,549740, 5330185,57117590,670163058,8543228103, 117564576721,1736762231296,27411856376831, 460320540171210,8194312180092795, 154127845115561811,3054239953905841713, 63597989583700047353,1388275729125313815336] |