n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 12 |
6 | 31 |
7 | 84 |
8 | 250 |
9 | 762 |
10 | 2504 |
11 | 8358 |
12 | 28928 |
13 | 101339 |
14 | 361184 |
15 | 1297864 |
16 | 4707712 |
17 | 17179434 |
18 | 63068079 |
19 | 232615770 |
20 | 861723271 |
21 | 3204236692 |
22 | 11955827898 |
23 | 44748176652 |
24 | 167959114814 |
25 | 632058070297 |
26 | 2384234976235 |
27 | 9013628450510 |
[1,1,1,2,5,12,31,84,250,762,2504,8358,28928, 101339,361184,1297864,4707712,17179434,63068079, 232615770,861723271,3204236692,11955827898, 44748176652,167959114814,632058070297, 2384234976235,9013628450510] |