n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 16 |
4 | 62 |
5 | 276 |
6 | 1377 |
7 | 7596 |
8 | 45789 |
9 | 298626 |
10 | 2090910 |
11 | 15621640 |
12 | 123897413 |
13 | 1038535174 |
14 | 9165475893 |
15 | 84886111212 |
16 | 822648571314 |
17 | 8321077557124 |
18 | 87648445601429 |
19 | 959450073912136 |
20 | 10894692556576613 |
21 | 128114221270929646 |
[1,2,5,16,62,276,1377,7596,45789,298626,2090910, 15621640,123897413,1038535174,9165475893, 84886111212,822648571314,8321077557124, 87648445601429,959450073912136,10894692556576613, 128114221270929646] |