n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 8 |
4 | 17 |
5 | 38 |
6 | 90 |
7 | 224 |
8 | 585 |
9 | 1594 |
10 | 4520 |
11 | 13288 |
12 | 40409 |
13 | 126782 |
14 | 409646 |
15 | 1360512 |
16 | 4637681 |
17 | 16202034 |
18 | 57941164 |
19 | 211860488 |
20 | 791272129 |
21 | 3015807254 |
22 | 11719800674 |
23 | 46401584096 |
24 | 187039192185 |
25 | 767058993386 |
26 | 3198568491792 |
27 | 13553864902504 |
[1,2,4,8,17,38,90,224,585,1594,4520,13288,40409, 126782,409646,1360512,4637681,16202034,57941164, 211860488,791272129,3015807254,11719800674, 46401584096,187039192185,767058993386, 3198568491792,13553864902504] |