n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 11 |
4 | 29 |
5 | 80 |
6 | 219 |
7 | 597 |
8 | 1632 |
9 | 4459 |
10 | 12181 |
11 | 33280 |
12 | 90923 |
13 | 248405 |
14 | 678656 |
15 | 1854123 |
16 | 5065557 |
17 | 13839360 |
18 | 37809835 |
19 | 103298389 |
20 | 282216448 |
21 | 771029675 |
22 | 2106492245 |
23 | 5755043840 |
24 | 15723072171 |
25 | 42956232021 |
26 | 117358608384 |
[1,1,4,11,29,80,219,597,1632,4459,12181,33280, 90923,248405,678656,1854123,5065557,13839360, 37809835,103298389,282216448,771029675,2106492245, 5755043840,15723072171,42956232021,117358608384] |