n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 35 |
4 | 167 |
5 | 862 |
6 | 4779 |
7 | 28287 |
8 | 177833 |
9 | 1182141 |
10 | 8276861 |
11 | 60830800 |
12 | 467892036 |
13 | 3756528046 |
14 | 31407155606 |
15 | 272873483535 |
16 | 2459042838030 |
17 | 22945764798093 |
18 | 221359390289706 |
19 | 2204643455978731 |
20 | 22639204005810330 |
21 | 239413600552185394 |
[1,2,8,35,167,862,4779,28287,177833,1182141, 8276861,60830800,467892036,3756528046,31407155606, 272873483535,2459042838030,22945764798093, 221359390289706,2204643455978731, 22639204005810330,239413600552185394] |