n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 19 |
6 | 42 |
7 | 93 |
8 | 205 |
9 | 453 |
10 | 1003 |
11 | 2221 |
12 | 4918 |
13 | 10892 |
14 | 24126 |
15 | 53442 |
16 | 118384 |
17 | 262248 |
18 | 580946 |
19 | 1286953 |
20 | 2850965 |
21 | 6315712 |
22 | 13991153 |
23 | 30994539 |
24 | 68662111 |
25 | 152107038 |
26 | 336962513 |
27 | 746472721 |
28 | 1653660451 |
29 | 3663352982 |
30 | 8115423952 |
31 | 17978094917 |
[1,1,2,4,9,19,42,93,205,453,1003,2221,4918,10892, 24126,53442,118384,262248,580946,1286953,2850965, 6315712,13991153,30994539,68662111,152107038, 336962513,746472721,1653660451,3663352982, 8115423952,17978094917] |