n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 21 |
5 | 53 |
6 | 130 |
7 | 310 |
8 | 724 |
9 | 1661 |
10 | 3757 |
11 | 8398 |
12 | 18588 |
13 | 40800 |
14 | 88918 |
15 | 192592 |
16 | 414907 |
17 | 889631 |
18 | 1899554 |
19 | 4040864 |
20 | 8567342 |
21 | 18109698 |
22 | 38176280 |
23 | 80278798 |
24 | 168432854 |
25 | 352658013 |
26 | 736977583 |
27 | 1537420460 |
28 | 3202035086 |
29 | 6658948608 |
[1,1,3,8,21,53,130,310,724,1661,3757,8398,18588, 40800,88918,192592,414907,889631,1899554,4040864, 8567342,18109698,38176280,80278798,168432854, 352658013,736977583,1537420460,3202035086, 6658948608] |